diff --git a/attachments.scad b/attachments.scad
index 983ccdf..c278b3a 100644
--- a/attachments.scad
+++ b/attachments.scad
@@ -765,7 +765,7 @@ module hulling(a)
 //   Takes a 3D mask shape, and attaches it to the given edges, with the appropriate orientation to be
 //   `diff()`ed away.  The mask shape should be vertically oriented (Z-aligned) with the back-right
 //   quadrant (X+Y+) shaped to be diffed away from the edge of parent attachable shape.
-//   For details on specifying the edges to mask see [Specifying Edges](edges.scad#section-specifying-edges).
+//   For details on specifying the edges to mask see [Specifying Edges](attachments.scad#subsection-specifying-edges).
 //   For a step-by-step explanation of attachments, see the [[Attachments Tutorial|Tutorial-Attachments]].
 // Figure: A Typical Edge Rounding Mask
 //   module roundit(l,r) difference() {
@@ -776,8 +776,8 @@ module hulling(a)
 //   }
 //   roundit(l=30,r=10);
 // Arguments:
-//   edges = Edges to mask.  See [Specifying Edges](edges.scad#section-specifying-edges).  Default: All edges.
-//   except = Edges to explicitly NOT mask.  See [Specifying Edges](edges.scad#section-specifying-edges).  Default: No edges.
+//   edges = Edges to mask.  See [Specifying Edges](attachments.scad#subsection-specifying-edges).  Default: All edges.
+//   except = Edges to explicitly NOT mask.  See [Specifying Edges](attachments.scad#subsection-specifying-edges).  Default: No edges.
 // Side Effects:
 //   Sets `$tags = "mask"` for all children.
 // Example:
@@ -819,11 +819,11 @@ module edge_mask(edges=EDGES_ALL, except=[]) {
 // Description:
 //   Takes a 3D mask shape, and attaches it to the specified corners, with the appropriate orientation to
 //   be `diff()`ed away.  The 3D corner mask shape should be designed to mask away the X+Y+Z+ octant.
-//   See [Specifying Corners](edges.scad#section-specifying-corners) for information on how to specify corner sets.  
+//   See [Specifying Corners](attachments.scad#subsection-specifying-corners) for information on how to specify corner sets.  
 //   For a step-by-step explanation of attachments, see the [[Attachments Tutorial|Tutorial-Attachments]].
 // Arguments:
-//   corners = Corners to mask.  See [Specifying Corners](edges.scad#section-specifying-corners).  Default: All corners.
-//   except = Corners to explicitly NOT mask.  See [Specifying Corners](edges.scad#section-specifying-corners).  Default: No corners.
+//   corners = Corners to mask.  See [Specifying Corners](attachments.scad#subsection-specifying-corners).  Default: All corners.
+//   except = Corners to explicitly NOT mask.  See [Specifying Corners](attachments.scad#subsection-specifying-corners).  Default: No corners.
 // Side Effects:
 //   Sets `$tags = "mask"` for all children.
 // Example:
@@ -861,7 +861,7 @@ module corner_mask(corners=CORNERS_ALL, except=[]) {
 // See Also: attachable(), position(), attach(), edge_profile(), corner_profile()
 // Description:
 //   Given a 2D edge profile, extrudes it into a mask for all edges and corners bounding each given face.
-//   See  [Specifying Faces](edges.scad#section-specifying-faces) for information on specifying faces.  
+//   See  [Specifying Faces](attachments.scad#subsection-specifying-faces) for information on specifying faces.  
 //   For a step-by-step explanation of attachments, see the [[Attachments Tutorial|Tutorial-Attachments]].
 // Arguments:
 //   faces = Faces to mask edges and corners of.
@@ -894,12 +894,12 @@ module face_profile(faces=[], r, d, convexity=10) {
 // Description:
 //   Takes a 2D mask shape and attaches it to the selected edges, with the appropriate orientation and
 //   extruded length to be `diff()`ed away, to give the edge a matching profile.
-//   For details on specifying the edges to mask see [Specifying Edges](edges.scad#section-specifying-edges).
+//   For details on specifying the edges to mask see [Specifying Edges](attachments.scad#subsection-specifying-edges).
 //   For a step-by-step
 //   explanation of attachments, see the [[Attachments Tutorial|Tutorial-Attachments]].
 // Arguments:
-//   edges = Edges to mask.  See [Specifying Edges](edges.scad#section-specifying-edges).  Default: All edges.
-//   except = Edges to explicitly NOT mask.  See [Specifying Edges](edges.scad#section-specifying-edges).  Default: No edges.
+//   edges = Edges to mask.  See [Specifying Edges](attachments.scad#subsection-specifying-edges).  Default: All edges.
+//   except = Edges to explicitly NOT mask.  See [Specifying Edges](attachments.scad#subsection-specifying-edges).  Default: No edges.
 //   convexity = Max number of times a line could intersect the perimeter of the mask shape.  Default: 10
 // Side Effects:
 //   Sets `$tags = "mask"` for all children.
@@ -950,11 +950,11 @@ module edge_profile(edges=EDGES_ALL, except=[], convexity=10) {
 //   Takes a 2D mask shape, rotationally extrudes and converts it into a corner mask, and attaches it
 //   to the selected corners with the appropriate orientation.  Tags it as a "mask" to allow it to be
 //   `diff()`ed away, to give the corner a matching profile.
-//   See [Specifying Corners](edges.scad#section-specifying-corners) for information on how to specify corner sets.  
+//   See [Specifying Corners](attachments.scad#subsection-specifying-corners) for information on how to specify corner sets.  
 //   For a step-by-step explanation of attachments, see the [[Attachments Tutorial|Tutorial-Attachments]].
 // Arguments:
-//   corners = Corners to mask.  See [Specifying Corners](edges.scad#section-specifying-corners).  Default: All corners.
-//   except = Corners to explicitly NOT mask.  See [Specifying Corners](edges.scad#section-specifying-corners).  Default: No corners.
+//   corners = Corners to mask.  See [Specifying Corners](attachments.scad#subsection-specifying-corners).  Default: All corners.
+//   except = Corners to explicitly NOT mask.  See [Specifying Corners](attachments.scad#subsection-specifying-corners).  Default: No corners.
 //   ---
 //   r = Radius of corner mask.
 //   d = Diameter of corner mask.
@@ -1067,9 +1067,9 @@ module corner_profile(corners=CORNERS_ALL, except=[], r, d, convexity=10) {
 //   For a more step-by-step explanation of attachments, see the [[Attachments Tutorial|Tutorial-Attachments]].
 //
 // Arguments:
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 //   ---
 //   size = If given as a 3D vector, contains the XY size of the bottom of the cuboidal/prismoidal volume, and the Z height.  If given as a 2D vector, contains the front X width of the rectangular/trapezoidal shape, and the Y length.
 //   size2 = If given as a 2D vector, contains the XY size of the top of the prismoidal volume.  If given as a number, contains the back width of the trapezoidal shape.
@@ -1354,9 +1354,9 @@ function named_anchor(name, pos=[0,0,0], orient=UP, spin=0) = [name, pos, orient
 //   For a more step-by-step explanation of attachments, see the [[Attachments Tutorial|Tutorial-Attachments]].
 //
 // Arguments:
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 //   ---
 //   size = If given as a 3D vector, contains the XY size of the bottom of the cuboidal/prismoidal volume, and the Z height.  If given as a 2D vector, contains the front X width of the rectangular/trapezoidal shape, and the Y length.
 //   size2 = If given as a 2D vector, contains the XY size of the top of the prismoidal volume.  If given as a number, contains the back width of the trapezoidal shape.
@@ -1705,9 +1705,9 @@ function _attach_geom_size(geom) =
 //   Returns the affine3d transformation matrix needed to `anchor`, `spin`, and `orient`
 //   the given geometry `geom` shape into position.
 // Arguments:
-//   anchor = Anchor point to translate to the origin `[0,0,0]`.  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Anchor point to translate to the origin `[0,0,0]`.  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 //   geom = The geometry description of the shape.
 //   p = If given as a VNF, path, or point, applies the affine3d transformation matrix to it and returns the result.
 function _attach_transform(anchor, spin, orient, geom, p) =
diff --git a/bottlecaps.scad b/bottlecaps.scad
index 5df27b8..c753569 100644
--- a/bottlecaps.scad
+++ b/bottlecaps.scad
@@ -23,9 +23,9 @@ include <rounding.scad>
 // Arguments:
 //   wall = Wall thickness in mm.
 //   ---
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 // Extra Anchors:
 //   "tamper-ring" = Centered at the top of the anti-tamper ring channel.
 //   "support-ring" = Centered at the bottom of the support ring.
@@ -145,9 +145,9 @@ function  pco1810_neck(wall=2, anchor="support-ring", spin=0, orient=UP) =
 //   wall = Wall thickness in mm.
 //   texture = The surface texture of the cap.  Valid values are "none", "knurled", or "ribbed".  Default: "none"
 //   ---
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 // Extra Anchors:
 //   "inside-top" = Centered on the inside top of the cap.
 // Examples:
@@ -215,9 +215,9 @@ function pco1810_cap(wall=2, texture="none", anchor=BOTTOM, spin=0, orient=UP) =
 // Arguments:
 //   wall = Wall thickness in mm.
 //   ---
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 // Extra Anchors:
 //   "tamper-ring" = Centered at the top of the anti-tamper ring channel.
 //   "support-ring" = Centered at the bottom of the support ring.
@@ -336,9 +336,9 @@ function pco1881_neck(wall=2, anchor="support-ring", spin=0, orient=UP) =
 // Arguments:
 //   wall = Wall thickness in mm.
 //   texture = The surface texture of the cap.  Valid values are "none", "knurled", or "ribbed".  Default: "none"
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 // Extra Anchors:
 //   "inside-top" = Centered on the inside top of the cap.
 // Examples:
@@ -405,9 +405,9 @@ function pco1881_cap(wall=2, texture="none", anchor=BOTTOM, spin=0, orient=UP) =
 //   pitch = Thread pitch
 //   round_supp = True to round the lower edge of the support ring
 //   ---
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 // Extra Anchors:
 //   "support-ring" = Centered at the bottom of the support ring.
 // Example:
@@ -530,9 +530,9 @@ function generic_bottle_neck(
 //   neck_od = Outer diameter of neck in mm.
 //   flank_angle = Angle of taper on threads.
 //   pitch = Thread pitch in mm.
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 // Extra Anchors:
 //   "inside-top" = Centered on the inside top of the cap.
 // Examples:
@@ -972,9 +972,9 @@ function bottle_adapter_neck_to_neck(
 //   id = inner diameter
 //   style = Either "L" or "M" to specify the thread style.  Default: "L"
 //   bead = if true apply a bad to the neck.  Default: false
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 // Examples:
 //   sp_neck(48,400,2);
 //   sp_neck(48,400,2,bead=true);
diff --git a/cubetruss.scad b/cubetruss.scad
index 7ee58f4..542fab5 100644
--- a/cubetruss.scad
+++ b/cubetruss.scad
@@ -42,9 +42,9 @@ function cubetruss_dist(cubes=0, gaps=0, size, strut) =
 //   strut = The width of the struts on the cubetruss cubes.  Default: `$cubetruss_strut_size` (usually 3)
 //   bracing = If true, adds internal cross-braces.  Default: `$cubetruss_bracing` (usually true)
 //   ---
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 // Topics: Attachable, Trusses
 // Examples:
 //   cubetruss_segment(bracing=false);
@@ -111,9 +111,9 @@ module cubetruss_segment(size, strut, bracing, anchor=CENTER, spin=0, orient=UP)
 //   strut = The width of the struts on the cubetruss cubes.  Default: `$cubetruss_strut_size` (usually 3)
 //   extents = If given as an integer, specifies the number of vertical segments for the support.  If given as a list of 3 integers, specifies the number of segments in the X, Y, and Z directions.  Default: 1.
 //   ---
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 // Topics: Attachable, Trusses
 // Example(VPT=[0,0,0],VPD=150):
 //   cubetruss_support();
@@ -172,9 +172,9 @@ module cubetruss_support(size, strut, extents=1, anchor=CENTER, spin=0, orient=U
 //   strut = The width of the struts on the cubetruss cubes.  Default: `$cubetruss_strut_size` (usually 3)
 //   clipthick = The thickness of the clip.  Default: `$cubetruss_clip_thickness` (usually 1.6)
 //   ---
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 // Topics: Attachable, Trusses
 // Examples:
 //   cubetruss_clip(extents=2);
@@ -236,9 +236,9 @@ module cubetruss_clip(extents=1, size, strut, clipthick, anchor=CENTER, spin=0,
 //   strut = The width of the struts on the cubetruss cubes.  Default: `$cubetruss_strut_size` (usually 3)
 //   clipthick = The thickness of the clips.  Default: `$cubetruss_clip_thickness` (usually 1.6)
 //   ---
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 // Topics: Attachable, Trusses
 // Examples:
 //   cubetruss_foot(w=1);
@@ -313,9 +313,9 @@ module cubetruss_foot(w=1, size, strut, clipthick, anchor=CENTER, spin=0, orient
 //   strut = The width of the struts on the cubetruss cubes.  Default: `$cubetruss_strut_size` (usually 3)
 //   clipthick = The thickness of the clips.  Default: `$cubetruss_clip_thickness` (usually 1.6)
 //   ---
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 // Topics: Attachable, Trusses
 // Examples:
 //   cubetruss_joiner(w=1, vert=false);
@@ -379,9 +379,9 @@ module cubetruss_joiner(w=1, vert=true, size, strut, clipthick, anchor=CENTER, s
 //   strut = The width of the struts on the cubetruss cubes.  Default: `$cubetruss_strut_size` (usually 3)
 //   clipthick = The thickness of the clips.  Default: `$cubetruss_clip_thickness` (usually 1.6)
 //   ---
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 // Topics: Attachable, Trusses
 // Examples:
 //   cubetruss_uclip(dual=false);
@@ -426,9 +426,9 @@ module cubetruss_uclip(dual=true, size, strut, clipthick, anchor=CENTER, spin=0,
 //   bracing = If true, adds internal cross-braces.  Default: `$cubetruss_bracing` (usually true)
 //   clipthick = The thickness of the clips.  Default: `$cubetruss_clip_thickness` (usually 1.6)
 //   ---
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 // Topics: Attachable, Trusses
 // Examples:
 //   cubetruss(extents=3);
@@ -496,9 +496,9 @@ module cubetruss(extents=6, clips=[], bracing, size, strut, clipthick, anchor=CE
 //   bracing = If true, adds internal cross-braces.  Default: `$cubetruss_bracing` (usually true)
 //   clipthick = The thickness of the clips.  Default: `$cubetruss_clip_thickness` (usually 1.6)
 //   ---
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 // Topics: Attachable, Trusses
 // Examples:
 //   cubetruss_corner(extents=2);
diff --git a/drawing.scad b/drawing.scad
index dea89a6..bff295d 100644
--- a/drawing.scad
+++ b/drawing.scad
@@ -598,8 +598,8 @@ module dashed_stroke(path, dashpat=[3,3], width=1, closed=false) {
 //   start = Start angle of arc.
 //   wedge = If true, include centerpoint `cp` in output to form pie slice shape.
 //   endpoint = If false exclude the last point (function only).  Default: true
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  (Module only) Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  (Module only) Default: `0`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  (Module only) Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  (Module only) Default: `0`
 // Examples(2D):
 //   arc(N=4, r=30, angle=30, wedge=true);
 //   arc(r=30, angle=30, wedge=true);
diff --git a/gears.scad b/gears.scad
index 4c2b6a1..3cf5b94 100644
--- a/gears.scad
+++ b/gears.scad
@@ -447,8 +447,8 @@ module gear_tooth_profile(
 //   backlash = Gap between two meshing teeth, in the direction along the circumference of the pitch circle
 //   interior = If true, create a mask for difference()ing from something else.
 //   mod = The metric module/modulus of the gear.
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
 // Example(2D): Typical Gear Shape
 //   spur_gear2d(pitch=5, teeth=20);
 // Example(2D): Metric Gear
@@ -543,8 +543,8 @@ module spur_gear2d(
 //   pressure_angle = Controls how straight or bulged the tooth sides are. In degrees.
 //   backlash = Gap between two meshing teeth, in the direction along the circumference of the pitch circle
 //   mod = The metric module/modulus of the gear.
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
 // Extra Anchors:
 //   "adendum" = At the tips of the teeth, at the center of rack.
 //   "adendum-left" = At the tips of the teeth, at the left end of the rack.
@@ -689,9 +689,9 @@ module rack2d(
 //   scale = Scale of top of gear compared to bottom.  Useful for making crown gears.
 //   interior = If true, create a mask for difference()ing from something else.
 //   mod = The metric module/modulus of the gear.
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 // Example: Spur Gear
 //   spur_gear(pitch=5, teeth=20, thickness=8, shaft_diam=5);
 // Example: Metric Gear
@@ -856,9 +856,9 @@ module spur_gear(
 //   slices = Number of vertical layers to divide gear into.  Useful for refining gears with `spiral`.  Default: 1
 //   interior = If true, create a mask for difference()ing from something else.
 //   mod = The metric module/modulus of the gear.
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 // Extra Anchors:
 //   "apex" = At the pitch cone apex for the bevel gear.
 //   "pitchbase" = At the natural height of the pitch radius of the beveled gear.
@@ -1089,9 +1089,9 @@ module bevel_gear(
 //   clearance = Clearance gap at the bottom of the inter-tooth valleys.
 //   helical = The angle of the rack teeth away from perpendicular to the rack length.  Used to match helical spur gear pinions.  Default: 0
 //   mod = The metric module/modulus of the gear.
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 // Extra Anchors:
 //   "adendum" = At the tips of the teeth, at the center of rack.
 //   "adendum-left" = At the tips of the teeth, at the left end of the rack.
@@ -1230,9 +1230,9 @@ function rack(
 //   backlash = Gap between two meshing teeth, in the direction along the circumference of the pitch circle.  Default: 0
 //   clearance = Clearance gap at the bottom of the inter-tooth valleys.
 //   mod = The metric module/modulus of the gear.
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 // Example:
 //   worm(pitch=8, d=30, l=50, $fn=72);
 // Example: Multiple Starts.
@@ -1350,9 +1350,9 @@ module worm(
 //   clearance = Clearance gap at the bottom of the inter-tooth valleys.
 //   slices = The number of vertical slices to refine the curve of the worm throat.  Default: 10
 //   mod = The metric module/modulus of the gear.
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 // Example: Right-Handed
 //   worm_gear(pitch=5, teeth=36, worm_diam=30, worm_starts=1);
 // Example: Left-Handed
diff --git a/hingesnaps.scad b/hingesnaps.scad
index 34d0ed1..fc0f243 100644
--- a/hingesnaps.scad
+++ b/hingesnaps.scad
@@ -21,9 +21,9 @@
 //   layerheight = The expected printing layer height in mm.
 //   foldangle = The interior angle in degrees of the joint to be created with the hinge.  Default: 90
 //   hingegap = Size in mm of the gap at the bottom of the hinge, to make room for folding.
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 // Example:
 //   folding_hinge_mask(l=100, thick=3, foldangle=60);
 module folding_hinge_mask(l, thick, layerheight=0.2, foldangle=90, hingegap=undef, anchor=CENTER, spin=0, orient=UP)
@@ -50,9 +50,9 @@ module folding_hinge_mask(l, thick, layerheight=0.2, foldangle=90, hingegap=unde
 //   layerheight = The expected printing layer height in mm.
 //   foldangle = The interior angle in degrees of the joint to be created with the hinge.  Default: 90
 //   hingegap = Size in mm of the gap at the bottom of the hinge, to make room for folding.
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 // Example:
 //   snap_lock(thick=3, foldangle=60);
 module snap_lock(thick, snaplen=5, snapdiam=5, layerheight=0.2, foldangle=90, hingegap=undef, anchor=CENTER, spin=0, orient=UP)
@@ -84,9 +84,9 @@ module snap_lock(thick, snaplen=5, snapdiam=5, layerheight=0.2, foldangle=90, hi
 //   layerheight = The expected printing layer height in mm.
 //   foldangle = The interior angle in degrees of the joint to be created with the hinge.  Default: 90
 //   hingegap = Size in mm of the gap at the bottom of the hinge, to make room for folding.
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 // Example:
 //   snap_socket(thick=3, foldangle=60);
 module snap_socket(thick, snaplen=5, snapdiam=5, layerheight=0.2, foldangle=90, hingegap=undef, anchor=CENTER, spin=0, orient=UP)
diff --git a/joiners.scad b/joiners.scad
index 306d33a..752105a 100644
--- a/joiners.scad
+++ b/joiners.scad
@@ -24,9 +24,9 @@ include <rounding.scad>
 //   a = Overhang angle of the joiner.
 //   clearance = Extra width to clear.
 //   overlap = Extra depth to clear.
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 // Example:
 //   half_joiner_clear();
 module half_joiner_clear(h=20, w=10, a=30, clearance=0, overlap=0.01, anchor=CENTER, spin=0, orient=UP)
@@ -70,9 +70,9 @@ module half_joiner_clear(h=20, w=10, a=30, clearance=0, overlap=0.01, anchor=CEN
 //   a = Overhang angle of the half_joiner.
 //   screwsize = Diameter of screwhole.
 //   guides = If true, create sliding alignment guides.
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 //   $slop = Printer specific slop value to make parts fit more closely.
 // Examples(FlatSpin,VPD=75):
 //   half_joiner(screwsize=3);
@@ -149,9 +149,9 @@ module half_joiner(h=20, w=10, l=10, a=30, screwsize=undef, guides=true, anchor=
 //   a = Overhang angle of the half_joiner.
 //   screwsize = Diameter of screwhole.
 //   guides = If true, create sliding alignment guides.
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 // Examples(FlatSpin,VPD=75):
 //   half_joiner2(screwsize=3);
 //   half_joiner2(h=20,w=10,l=10);
@@ -198,9 +198,9 @@ module half_joiner2(h=20, w=10, l=10, a=30, screwsize=undef, guides=true, anchor
 //   a = Overhang angle of the joiner.
 //   clearance = Extra width to clear.
 //   overlap = Extra depth to clear.
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 // Example:
 //   joiner_clear();
 module joiner_clear(h=40, w=10, a=30, clearance=0, overlap=0.01, anchor=CENTER, spin=0, orient=UP)
@@ -233,9 +233,9 @@ module joiner_clear(h=40, w=10, a=30, clearance=0, overlap=0.01, anchor=CENTER,
 //   a = Overhang angle of the joiner.
 //   screwsize = Diameter of screwhole.
 //   guides = If true, create sliding alignment guides.
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 //   $slop = Printer specific slop value to make parts fit more closely.
 // Examples(FlatSpin,VPD=125):
 //   joiner(screwsize=3);
@@ -269,9 +269,9 @@ module joiner(h=40, w=10, l=10, a=30, screwsize=undef, guides=true, anchor=CENTE
 //   n = Number of joiners (2 by default) to clear for.
 //   clearance = Extra width to clear.
 //   overlap = Extra depth to clear.
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 // Examples:
 //   joiner_pair_clear(spacing=50, n=2);
 //   joiner_pair_clear(spacing=50, n=3);
@@ -307,9 +307,9 @@ module joiner_pair_clear(spacing=100, h=40, w=10, a=30, n=2, clearance=0, overla
 //   alternate = If true (default), each joiner alternates it's orientation.  If alternate is "alt", do opposite alternating orientations.
 //   screwsize = Diameter of screwhole.
 //   guides = If true, create sliding alignment guides.
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 //   $slop = Printer specific slop value to make parts fit more closely.
 // Example(FlatSpin,VPD=200):
 //   joiner_pair(spacing=50, l=10);
@@ -352,9 +352,9 @@ module joiner_pair(spacing=100, h=40, w=10, l=10, a=30, n=2, alternate=true, scr
 //   n = Number of joiners in a row.  Default: 2
 //   clearance = Extra width to clear.
 //   overlap = Extra depth to clear.
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 // Examples:
 //   joiner_quad_clear(spacing1=50, spacing2=50, n=2);
 //   joiner_quad_clear(spacing1=50, spacing2=50, n=3);
@@ -390,9 +390,9 @@ module joiner_quad_clear(xspacing=undef, yspacing=undef, spacing1=undef, spacing
 //   screwsize = Diameter of screwhole.
 //   guides = If true, create sliding alignment guides.
 //   $slop = Printer specific slop value to make parts fit more closely.
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 // Example(FlatSpin,VPD=250):
 //   joiner_quad(spacing1=50, spacing2=50, l=10);
 // Examples:
diff --git a/knurling.scad b/knurling.scad
index 94156bc..ac7ea76 100644
--- a/knurling.scad
+++ b/knurling.scad
@@ -38,9 +38,9 @@
 //   rounding = The radius of the rounding on the ends of the cylinder.  Default: none.
 //   rounding1 = The radius of the rounding on the bottom end of the cylinder.
 //   rounding2 = The radius of the rounding on the top end of the cylinder.
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 // Examples(Med):
 //   knurled_cylinder(l=30, r=20, count=30, profile=120, helix=45);
 //   knurled_cylinder(l=30, r=20, count=30, profile=120, helix=30);
@@ -141,9 +141,9 @@ module knurled_cylinder(
 //   count = The number of grooves to have around the surface of the cylinder.  Default: 30
 //   profile = The angle of the bottom of the groove, in degrees.  Default 120
 //   helix = The helical angle of the grooves, in degrees.  Default: 30
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 // Examples:
 //   knurled_cylinder_mask(l=30, r=20, overage=5, profile=120, helix=30);
 //   knurled_cylinder_mask(l=30, r=20, overage=10, profile=120, helix=30);
diff --git a/linear_bearings.scad b/linear_bearings.scad
index ff71a68..8cfee60 100644
--- a/linear_bearings.scad
+++ b/linear_bearings.scad
@@ -74,9 +74,9 @@ function get_lmXuu_bearing_length(size) = lookup(size, [
 //   wall = Wall thickness of clamp housing. (Default: 3)
 //   gap = Gap in clamp. (Default: 5)
 //   screwsize = Size of screw to use to tighten clamp. (Default: 3)
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 // Example:
 //   linear_bearing_housing(d=19, l=29, wall=2, tab=6, screwsize=2.5);
 module linear_bearing_housing(d=15, l=24, tab=7, gap=5, wall=3, tabwall=5, screwsize=3, anchor=BOTTOM, spin=0, orient=UP)
@@ -133,9 +133,9 @@ module linear_bearing_housing(d=15, l=24, tab=7, gap=5, wall=3, tabwall=5, screw
 //   wall = Wall thickness of clamp housing.  Default: 3
 //   gap = Gap in clamp.  Default: 5
 //   screwsize = Size of screw to use to tighten clamp.  Default: 3
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 // Example:
 //   lmXuu_housing(size=10, wall=2, tab=6, screwsize=2.5);
 module lmXuu_housing(size=8, tab=7, gap=5, wall=3, tabwall=5, screwsize=3, anchor=BOTTOM, spin=0, orient=UP)
diff --git a/masks2d.scad b/masks2d.scad
index 65121c5..5c39434 100644
--- a/masks2d.scad
+++ b/masks2d.scad
@@ -30,8 +30,8 @@
 //   excess = Extra amount of mask shape to creates on the X- and Y- sides of the shape.  Default: 0.01
 //   ---
 //   d = Diameter of the roundover.
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
 // Example(2D): 2D Roundover Mask
 //   mask2d_roundover(r=10);
 // Example(2D): 2D Bead Mask
@@ -87,8 +87,8 @@ function mask2d_roundover(r, inset=0, excess=0.01, d, anchor=CENTER,spin=0) =
 //   excess = Extra amount of mask shape to creates on the X- and Y- sides of the shape.  Default: 0.01
 //   ---
 //   d = Diameter of the cove.
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
 // Example(2D): 2D Cove Mask
 //   mask2d_cove(r=10);
 // Example(2D): 2D Inset Cove Mask
@@ -150,8 +150,8 @@ function mask2d_cove(r, inset=0, excess=0.01, d, anchor=CENTER,spin=0) =
 //   ---
 //   x = The width of the chamfer.
 //   y = The height of the chamfer.
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
 // Example(2D): 2D Chamfer Mask
 //   mask2d_chamfer(x=10);
 // Example(2D): 2D Chamfer Mask by Width.
@@ -213,8 +213,8 @@ function mask2d_chamfer(edge, angle=45, inset=0, excess=0.01, x, y, anchor=CENTE
 //   size = The size of the rabbet, either as a scalar or an [X,Y] list.
 //   excess = Extra amount of mask shape to creates on the X- and Y- sides of the shape. Default: 0.01
 //   ---
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
 // Example(2D): 2D Rabbet Mask
 //   mask2d_rabbet(size=10);
 // Example(2D): 2D Asymmetrical Rabbet Mask
@@ -271,8 +271,8 @@ function mask2d_rabbet(size, excess=0.01, anchor=CENTER,spin=0) =
 //   ---
 //   x = The width of the dovetail.
 //   y = The height of the dovetail.
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
 // Example(2D): 2D Dovetail Mask
 //   mask2d_dovetail(x=10);
 // Example(2D): 2D Dovetail Mask by Width.
@@ -338,8 +338,8 @@ function mask2d_dovetail(edge, angle=30, inset=0, shelf=0, excess=0.01, x, y, an
 //   excess = Extra amount of mask shape to creates on the X- and Y- sides of the shape. Default: 0.01
 //   ---
 //   d = Diameter of the rounding.
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
 // Example(2D): 2D Teardrop Mask
 //   mask2d_teardrop(r=10);
 // Example(2D): Using a Custom Angle
@@ -405,8 +405,8 @@ module mask2d_teardrop(r, angle=45, excess=0.01, d, anchor=CENTER, spin=0) {
 //   pattern = A list of pattern pieces to describe the Ogee.
 //   excess = Extra amount of mask shape to creates on the X- and Y- sides of the shape. Default: 0.01
 //   ---
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
 //
 // Example(2D): 2D Ogee Mask
 //   mask2d_ogee([
diff --git a/masks3d.scad b/masks3d.scad
index df89eb3..82bffee 100644
--- a/masks3d.scad
+++ b/masks3d.scad
@@ -21,9 +21,9 @@
 //   l = Length of mask.
 //   chamfer = Size of chamfer.
 //   excess = The extra amount to add to the length of the mask so that it differences away from other shapes cleanly.  Default: `0.1`
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 // Example:
 //   chamfer_edge_mask(l=50, chamfer=10);
 // Example:
@@ -55,9 +55,9 @@ module chamfer_edge_mask(l=1, chamfer=1, excess=0.1, anchor=CENTER, spin=0, orie
 // Arguments:
 //   chamfer = Size of chamfer.
 //   ---
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 // Example:
 //   chamfer_corner_mask(chamfer=10);
 // Example:
@@ -93,9 +93,9 @@ module chamfer_corner_mask(chamfer=1, anchor=CENTER, spin=0, orient=UP) {
 //   chamfer = Size of the edge chamfered, inset from edge. (Default: 0.25)
 //   ang = Angle of chamfer in degrees from vertical.  (Default: 45)
 //   from_end = If true, chamfer size is measured from end of cylinder.  If false, chamfer is measured outset from the radius of the cylinder.  (Default: false)
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 // Example:
 //   difference() {
 //       cylinder(r=50, h=100, center=true);
@@ -141,9 +141,9 @@ module chamfer_cylinder_mask(r, d, chamfer=0.25, ang=45, from_end=false, anchor=
 //   d1 = Bottom diameter of rounding.
 //   d2 = Top diameter of rounding.
 //   excess = Extra size for the mask.  Defaults: 0.1
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 // Example(VPD=200,VPR=[55,0,120]):
 //   rounding_edge_mask(l=50, r1=10, r2=25);
 // Example:
@@ -211,9 +211,9 @@ module rounding_edge_mask(l, r, r1, r2, d, d1, d2, excess=0.1, anchor=CENTER, sp
 //   ---
 //   excess = Extra size for the mask.  Defaults: 0.1
 //   style = The style of the sphere cutout's construction. One of "orig", "aligned", "stagger", "octa", or "icosa".  Default: "octa"
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 // Example:
 //   rounding_corner_mask(r=20.0);
 // Example:
@@ -264,9 +264,9 @@ module rounding_corner_mask(r, d, style="octa", excess=0.1, anchor=CENTER, spin=
 //   d1 = Bottom diameter of rounding.
 //   d2 = Top diameter of rounding.
 //   ang = Angle that the planes meet at.
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 // Example:
 //   difference() {
 //       pie_slice(ang=70, h=50, d=100, center=true);
@@ -322,9 +322,9 @@ module rounding_angled_edge_mask(h=1.0, r, r1, r2, d, d1, d2, ang=90, anchor=CEN
 //   r = Radius of the rounding.
 //   d = Diameter of the rounding.
 //   ang = Angle between planes that you need to round the corner of.
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 // Example(Med):
 //   ang=60;
 //   difference() {
@@ -409,9 +409,9 @@ module rounding_cylinder_mask(r, rounding=0.25, d)
 //   d = Diameter of hole to rounding.
 //   rounding = Radius of the rounding. (Default: 0.25)
 //   excess = The extra thickness of the mask.  Default: `0.1`.
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 // Example:
 //   rounding_hole_mask(r=40, rounding=20, $fa=2, $fs=2);
 // Example(Med):
@@ -453,9 +453,9 @@ module rounding_hole_mask(r, rounding=0.25, excess=0.1, d, anchor=CENTER, spin=0
 //   d = Diameter of the mask rounding.
 //   angle = Maximum angle from vertical. Default: 45
 //   excess = Excess mask size.  Default: 0.1
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 // Example(VPD=50,VPR=[55,0,120]):
 //   teardrop_edge_mask(l=20, r=10, angle=40);
 // Example(VPD=300,VPR=[75,0,25]):
@@ -489,9 +489,9 @@ module teardrop_edge_mask(l, r, angle, excess=0.1, d, anchor=CENTER, spin=0, ori
 //   d = Diameter of the mask rounding.
 //   angle = Maximum angle from vertical. Default: 45
 //   excess = Excess mask size.  Default: 0.1
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 // Example:
 //   teardrop_corner_mask(r=20, angle=40);
 // Example:
diff --git a/metric_screws.scad b/metric_screws.scad
index 36a749d..53e7b8b 100644
--- a/metric_screws.scad
+++ b/metric_screws.scad
@@ -366,9 +366,9 @@ function get_metric_nut_thickness(size) = lookup(size, [
 //   screwlen = length of threaded part of screw.
 //   headsize = diameter of the screw head.
 //   headlen = length of the screw head.
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 // Extra Anchors:
 //   "base" = At the base of the head.
 //   "countersunk" = At the head height that would be just barely exposed when countersunk.
@@ -427,9 +427,9 @@ module generic_screw(
 //   flange = Radius of flange beyond the head.  Default = 0 (no flange)
 //   phillips = If given, the size of the phillips drive hole to add.  (ie: "#1", "#2", or "#3")
 //   torx = If given, the size of the torx drive hole to add.  (ie: 10, 20, 30, etc.)
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 // Extra Anchors:
 //   "base" = At the base of the head.
 //   "countersunk" = At the head height that would be just barely exposed when countersunk.
@@ -630,9 +630,9 @@ module metric_bolt(
 //   pitch = pitch of threads in the hole.  No threads if not given.
 //   flange = radius of flange beyond the head.  Default = 0 (no flange)
 //   details = true if model should be rendered with extra details.  (Default: false)
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 //   center = If true, centers the nut at the origin.  If false, sits on top of XY plane.  Overrides `anchor` if given.
 // Example: No details, No Hole.  Useful for a mask.
 //   metric_nut(size=10, hole=false);
diff --git a/mutators.scad b/mutators.scad
index cbc53d6..9049693 100644
--- a/mutators.scad
+++ b/mutators.scad
@@ -692,9 +692,9 @@ module extrude_from_to(pt1, pt2, convexity, twist, scale, slices) {
 //   higbee1 = Taper length at start
 //   higbee2 = Taper length at end
 //   internal = direction to taper the threads with higbee.  If true threads taper outward; if false they taper inward.   Default: false
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 //   center = If given, overrides `anchor`.  A true value sets `anchor=CENTER`, false sets `anchor=BOTTOM`.
 // Example:
 //   poly = [[-10,0], [-3,-5], [3,-5], [10,0], [0,-30]];
diff --git a/nema_steppers.scad b/nema_steppers.scad
index 518c5b5..a1fb256 100644
--- a/nema_steppers.scad
+++ b/nema_steppers.scad
@@ -97,9 +97,9 @@ function nema_motor_screw_depth(size) = lookup(size, [
 //   h = Length of motor body.  Default: 24mm
 //   shaft = Shaft diameter. Default: 5mm
 //   shaft_len = Length of shaft protruding out the top of the stepper motor.  Default: 20mm
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 // Extra Anchors:
 //   "shaft-top" = The top of the shaft.
 //   "shaft-middle" = The middle of the shaft.
@@ -162,9 +162,9 @@ module nema11_stepper(h=24, shaft=5, shaft_len=20, anchor=TOP, spin=0, orient=UP
 //   h = Length of motor body.  Default: 24mm
 //   shaft = Shaft diameter. Default: 5mm
 //   shaft_len = Length of shaft protruding out the top of the stepper motor.  Default: 24mm
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 // Extra Anchors:
 //   "shaft-top" = The top of the shaft.
 //   "shaft-middle" = The middle of the shaft.
@@ -227,9 +227,9 @@ module nema14_stepper(h=24, shaft=5, shaft_len=24, anchor=TOP, spin=0, orient=UP
 //   h = Length of motor body.  Default: 34mm
 //   shaft = Shaft diameter. Default: 5mm
 //   shaft_len = Length of shaft protruding out the top of the stepper motor.  Default: 20mm
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 // Extra Anchors:
 //   "shaft-top" = The top of the shaft.
 //   "shaft-middle" = The middle of the shaft.
@@ -311,9 +311,9 @@ module nema17_stepper(h=34, shaft=5, shaft_len=20, anchor=TOP, spin=0, orient=UP
 //   h = Length of motor body.  Default: 50mm
 //   shaft = Shaft diameter. Default: 6.35mm
 //   shaft_len = Length of shaft protruding out the top of the stepper motor.  Default: 25mm
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 // Extra Anchors:
 //   "shaft-top" = The top of the shaft.
 //   "shaft-middle" = The middle of the shaft.
@@ -378,9 +378,9 @@ module nema23_stepper(h=50, shaft=6.35, shaft_len=25, anchor=TOP, spin=0, orient
 //   h = Length of motor body.  Default: 75mm
 //   shaft = Shaft diameter. Default: 12.7mm
 //   shaft_len = Length of shaft protruding out the top of the stepper motor.  Default: 32mm
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 // Extra Anchors:
 //   "shaft-top" = The top of the shaft.
 //   "shaft-middle" = The middle of the shaft.
@@ -449,9 +449,9 @@ module nema34_stepper(h=75, shaft=12.7, shaft_len=32, anchor=TOP, spin=0, orient
 //   size = The standard NEMA motor size to make a mount for.
 //   depth = The thickness of the mounting hole mask.  Default: 5
 //   l = The length of the slots, for making an adjustable motor mount.  Default: 5
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 //   $slop = The printer-specific slop value to make parts fit just right.
 // Extra Anchors:
 //   "screw1" = The center top of the screw hole/slot in the X+Y+ quadrant.
@@ -514,9 +514,9 @@ module nema_mount_holes(size=17, depth=5, l=5, anchor=CENTER, spin=0, orient=UP)
 // Arguments:
 //   depth = The thickness of the mounting hole mask.  Default: 5
 //   l = The length of the slots, for making an adjustable motor mount.  Default: 5
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 //   $slop = The printer-specific slop value to make parts fit just right.
 // Extra Anchors:
 //   "screw1" = The center top of the screw hole/slot in the X+Y+ quadrant.
@@ -539,9 +539,9 @@ module nema11_mount_holes(depth=5, l=5, anchor=CENTER, spin=0, orient=UP)
 // Arguments:
 //   depth = The thickness of the mounting hole mask.  Default: 5
 //   l = The length of the slots, for making an adjustable motor mount.  Default: 5
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 //   $slop = The printer-specific slop value to make parts fit just right.
 // Extra Anchors:
 //   "screw1" = The center top of the screw hole/slot in the X+Y+ quadrant.
@@ -564,9 +564,9 @@ module nema14_mount_holes(depth=5, l=5, anchor=CENTER, spin=0, orient=UP)
 // Arguments:
 //   depth = The thickness of the mounting hole mask.  Default: 5
 //   l = The length of the slots, for making an adjustable motor mount.  Default: 5
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 //   $slop = The printer-specific slop value to make parts fit just right.
 // Extra Anchors:
 //   "screw1" = The center top of the screw hole/slot in the X+Y+ quadrant.
@@ -589,9 +589,9 @@ module nema17_mount_holes(depth=5, l=5, anchor=CENTER, spin=0, orient=UP)
 // Arguments:
 //   depth = The thickness of the mounting hole mask.  Default: 5
 //   l = The length of the slots, for making an adjustable motor mount.  Default: 5
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 //   $slop = The printer-specific slop value to make parts fit just right.
 // Extra Anchors:
 //   "screw1" = The center top of the screw hole/slot in the X+Y+ quadrant.
@@ -614,9 +614,9 @@ module nema23_mount_holes(depth=5, l=5, anchor=CENTER, spin=0, orient=UP)
 // Arguments:
 //   depth = The thickness of the mounting hole mask.  Default: 5
 //   l = The length of the slots, for making an adjustable motor mount.  Default: 5
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 //   $slop = The printer-specific slop value to make parts fit just right.
 // Extra Anchors:
 //   "screw1" = The center top of the screw hole/slot in the X+Y+ quadrant.
diff --git a/partitions.scad b/partitions.scad
index 418f6d4..4688575 100644
--- a/partitions.scad
+++ b/partitions.scad
@@ -64,8 +64,8 @@ function _partition_cutpath(l, h, cutsize, cutpath, gap) =
 //   cutpath = The cutpath to use.  Standard named paths are "flat", "sawtooth", "sinewave", "comb", "finger", "dovetail", "hammerhead", and "jigsaw".  Alternatively, you can give a cutpath as a 2D path, where X is between 0 and 1, and Y is between -0.5 and 0.5.
 //   gap = Empty gaps between cutpath iterations.  Default: 0
 //   inverse = If true, create a cutpath that is meant to mate to a non-inverted cutpath.
-//   spin = Rotate this many degrees around the Z axis.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards.  See [orient](attachments.scad#orient).  Default: `UP`
+//   spin = Rotate this many degrees around the Z axis.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 //   $slop = The amount to shrink the mask by, to correct for printer-specific fitting.
 // Examples:
 //   partition_mask(w=50, gap=0, cutpath="jigsaw");
@@ -115,8 +115,8 @@ module partition_mask(l=100, w=100, h=100, cutsize=10, cutpath="jigsaw", gap=0,
 //   cutsize = The width of the cut pattern to be used.
 //   cutpath = The cutpath to use.  Standard named paths are "flat", "sawtooth", "sinewave", "comb", "finger", "dovetail", "hammerhead", and "jigsaw".  Alternatively, you can give a cutpath as a 2D path, where X is between 0 and 1, and Y is between -0.5 and 0.5.  Default: "jigsaw"
 //   gap = Empty gaps between cutpath iterations.  Default: 0
-//   spin = Rotate this many degrees around the Z axis.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards.  See [orient](attachments.scad#orient).  Default: `UP`
+//   spin = Rotate this many degrees around the Z axis.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 //   $slop = The width of the cut mask, to correct for printer-specific fitting.  Min: 0.05.
 // Examples:
 //   partition_cut_mask(gap=0, cutpath="dovetail");
@@ -155,7 +155,7 @@ module partition_cut_mask(l=100, h=100, cutsize=10, cutpath="jigsaw", gap=0, anc
 //   cutsize = The width of the cut pattern to be used.
 //   cutpath = The cutpath to use.  Standard named paths are "flat", "sawtooth", "sinewave", "comb", "finger", "dovetail", "hammerhead", and "jigsaw".  Alternatively, you can give a cutpath as a 2D path, where X is between 0 and 1, and Y is between -0.5 and 0.5.
 //   gap = Empty gaps between cutpath iterations.  Default: 0
-//   spin = Rotate this many degrees around the Z axis.  See [spin](attachments.scad#spin).  Default: `0`
+//   spin = Rotate this many degrees around the Z axis.  See [spin](attachments.scad#subsection-spin).  Default: `0`
 // Examples(Med):
 //   partition(spread=12, cutpath="dovetail") cylinder(h=50, d=80, center=false);
 //   partition(spread=12, gap=30, cutpath="dovetail") cylinder(h=50, d=80, center=false);
diff --git a/regions.scad b/regions.scad
index 059235d..a88b766 100644
--- a/regions.scad
+++ b/regions.scad
@@ -285,8 +285,8 @@ function force_region(poly) = is_path(poly) ? [poly] : poly;
 //   displayed result is the exclusive-or of the polygons listed in the input. 
 // Arguments:
 //   r = region to create as geometry
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `"origin"`
-//   spin = Rotate this many degrees after anchor.  See [spin](attachments.scad#spin).  Default: `0`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `"origin"`
+//   spin = Rotate this many degrees after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
 //   cp = Centerpoint for determining intersection anchors or centering the shape.  Determintes the base of the anchor vector.  Can be "centroid", "mean", "box" or a 2D point.  Default: "centroid"
 //   atype = Set to "hull" or "intersect to select anchor type.  Default: "hull"
 // Example(2D): Displaying a region
@@ -611,11 +611,11 @@ function region_parts(region) =
 //   scale = The amount to scale the shape, from bottom to top.  Default: 1
 //   style = The style to use when triangulating the surface of the object.  Valid values are `"default"`, `"alt"`, or `"quincunx"`.
 //   convexity = Max number of surfaces any single ray could pass through.  Module use only.
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `"origin"`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `"origin"`
 //   atype = Set to "hull" or "intersect" to select anchor type.  Default: "hull"
 //   cp = Centerpoint for determining intersection anchors or centering the shape.  Determintes the base of the anchor vector.  Can be "centroid", "mean", "box" or a 3D point.  Default: "centroid"
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 // Example: Extruding a Compound Region.
 //   rgn1 = [for (d=[10:10:60]) circle(d=d,$fn=8)];
 //   rgn2 = [square(30,center=false)];
diff --git a/screw_drive.scad b/screw_drive.scad
index d66eb38..267d90a 100644
--- a/screw_drive.scad
+++ b/screw_drive.scad
@@ -15,9 +15,9 @@
 //   be lowered to different depths to create different sizes of recess.  
 // Arguments:
 //   size = The size of the bit as a number or string.  "#0", "#1", "#2", "#3", or "#4"
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 // Example:
 //   xdistribute(10) {
 //      phillips_mask(size="#1");
@@ -292,9 +292,9 @@ module torx_mask2d(size) {
 //   size = Torx size.
 //   l = Length of bit.
 //   center = If true, centers bit vertically.
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 // Examples:
 //   torx_mask(size=30, l=10, $fa=1, $fs=1);
 module torx_mask(size, l=5, center, anchor, spin=0, orient=UP) {
diff --git a/shapes2d.scad b/shapes2d.scad
index 6c25153..b2b1a66 100644
--- a/shapes2d.scad
+++ b/shapes2d.scad
@@ -33,8 +33,8 @@ use <builtins.scad>
 //   size = The size of the square to create.  If given as a scalar, both X and Y will be the same size.
 //   center = If given and true, overrides `anchor` to be `CENTER`.  If given and false, overrides `anchor` to be `FRONT+LEFT`.
 //   ---
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
 // Example(2D):
 //   square(40);
 // Example(2D): Centered
@@ -84,8 +84,8 @@ module square(size=1, center, anchor, spin) {
 //   rounding = The rounding radius for the corners.  If given as a list of four numbers, gives individual radii for each corner, in the order [X+Y+,X-Y+,X-Y-,X+Y-]. Default: 0 (no rounding)
 //   chamfer = The chamfer size for the corners.  If given as a list of four numbers, gives individual chamfers for each corner, in the order [X+Y+,X-Y+,X-Y-,X+Y-].  Default: 0 (no chamfer)
 //   center = If given and true, overrides `anchor` to be `CENTER`.  If given and false, overrides `anchor` to be `FRONT+LEFT`.
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
 // Example(2D):
 //   rect(40);
 // Example(2D): Centered
@@ -187,8 +187,8 @@ function rect(size=1, center, rounding=0, chamfer=0, anchor, spin=0) =
 //   r = The radius of the circle to create.
 //   d = The diameter of the circle to create.
 //   ---
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
 // Example(2D): By Radius
 //   circle(r=25);
 // Example(2D): By Diameter
@@ -233,8 +233,8 @@ module circle(r, d, anchor=CENTER, spin=0) {
 //   d = Diameter of the circle or a pair giving the full X and Y axis lengths.  
 //   realign = If false starts the approximate ellipse with a point on the X+ axis.  If true the midpoint of a side is on the X+ axis and the first point of the polygon is below the X+ axis.  This can result in a very different polygon when $fn is small.  Default: false
 //   circum = If true, the polygon that approximates the circle will be upsized slightly to circumscribe the theoretical circle.  If false, it inscribes the theoretical circle.  Default: false
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
 // Example(2D): By Radius
 //   ellipse(r=25);
 // Example(2D): By Diameter
@@ -416,8 +416,8 @@ function ellipse(r, d, realign=false, circum=false, uniform=false, anchor=CENTER
 //   realign = If false, vertex 0 will lie on the X+ axis.  If true then the midpoint of the last edge will lie on the X+ axis, and vertex 0 will be below the X axis.    Default: false
 //   align_tip = If given as a 2D vector, rotates the whole shape so that the first vertex points in that direction.  This occurs before spin.
 //   align_side = If given as a 2D vector, rotates the whole shape so that the normal of side0 points in that direction.  This occurs before spin.
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
 // Extra Anchors:
 //   "tip0", "tip1", etc. = Each tip has an anchor, pointing outwards.
 //   "side0", "side1", etc. = The center of each side has an anchor, pointing outwards.
@@ -551,8 +551,8 @@ module regular_ngon(n=6, r, d, or, od, ir, id, side, rounding=0, realign=false,
 //   realign = If false, vertex 0 will lie on the X+ axis.  If true then the midpoint of the last edge will lie on the X+ axis, and vertex 0 will be below the X axis.    Default: false
 //   align_tip = If given as a 2D vector, rotates the whole shape so that the first vertex points in that direction.  This occurs before spin.
 //   align_side = If given as a 2D vector, rotates the whole shape so that the normal of side0 points in that direction.  This occurs before spin.
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
 // Extra Anchors:
 //   "tip0" ... "tip4" = Each tip has an anchor, pointing outwards.
 //   "side0" ... "side4" = The center of each side has an anchor, pointing outwards.
@@ -615,8 +615,8 @@ module pentagon(r, d, or, od, ir, id, side, rounding=0, realign=false, align_tip
 //   realign = If false, vertex 0 will lie on the X+ axis.  If true then the midpoint of the last edge will lie on the X+ axis, and vertex 0 will be below the X axis.    Default: false
 //   align_tip = If given as a 2D vector, rotates the whole shape so that the first vertex points in that direction.  This occurs before spin.
 //   align_side = If given as a 2D vector, rotates the whole shape so that the normal of side0 points in that direction.  This occurs before spin.
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
 // Extra Anchors:
 //   "tip0" ... "tip5" = Each tip has an anchor, pointing outwards.
 //   "side0" ... "side5" = The center of each side has an anchor, pointing outwards.
@@ -678,8 +678,8 @@ module hexagon(r, d, or, od, ir, id, side, rounding=0, realign=false, align_tip,
 //   realign = If false, vertex 0 will lie on the X+ axis.  If true then the midpoint of the last edge will lie on the X+ axis, and vertex 0 will be below the X axis.    Default: false
 //   align_tip = If given as a 2D vector, rotates the whole shape so that the first vertex points in that direction.  This occurs before spin.
 //   align_side = If given as a 2D vector, rotates the whole shape so that the normal of side0 points in that direction.  This occurs before spin.
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
 // Extra Anchors:
 //   "tip0" ... "tip7" = Each tip has an anchor, pointing outwards.
 //   "side0" ... "side7" = The center of each side has an anchor, pointing outwards.
@@ -726,8 +726,8 @@ module octagon(r, d, or, od, ir, id, side, rounding=0, realign=false, align_tip,
 //   size = The width and length of the right triangle, given as a scalar or an XY vector.
 //   center = If true, forces `anchor=CENTER`.  If false, forces `anchor=[-1,-1]`.  Default: undef (use `anchor=`)
 //   ---
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
 // Example:
 //   right_triangle([40,30]);
 // Example: With `center=true`
@@ -784,8 +784,8 @@ module right_triangle(size=[1,1], center, anchor, spin=0) {
 //   shift = Scalar value to shift the back of the trapezoid along the X axis by.  Default: 0
 //   rounding = The rounding radius for the corners.  If given as a list of four numbers, gives individual radii for each corner, in the order [X+Y+,X-Y+,X-Y-,X+Y-]. Default: 0 (no rounding)
 //   chamfer = The Length of the chamfer faces at the corners.  If given as a list of four numbers, gives individual chamfers for each corner, in the order [X+Y+,X-Y+,X-Y-,X+Y-].  Default: 0 (no chamfer)
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
 // Examples(2D):
 //   trapezoid(h=30, w1=40, w2=20);
 //   trapezoid(h=25, w1=20, w2=35);
@@ -888,8 +888,8 @@ module trapezoid(h, w1, w2, angle, shift=0, chamfer=0, rounding=0, anchor=CENTER
 //   realign = If false, vertex 0 will lie on the X+ axis.  If true then the midpoint of the last edge will lie on the X+ axis, and vertex 0 will be below the X axis.    Default: false
 //   align_tip = If given as a 2D vector, rotates the whole shape so that the first star tip points in that direction.  This occurs before spin.
 //   align_pit = If given as a 2D vector, rotates the whole shape so that the first inner corner is pointed towards that direction.  This occurs before spin.
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
 //   atype = Choose "hull" or "intersect" anchor methods.  Default: "hull"
 // Extra Anchors:
 //   "tip0" ... "tip4" = Each tip has an anchor, pointing outwards.
@@ -1080,8 +1080,8 @@ module jittered_poly(path, dist=1/512) {
 //   cap_h = if given, height above center where the shape will be truncated.
 //   ---
 //   d = diameter of spherical portion of bottom. (Use instead of r)
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
 //
 // Example(2D): Typical Shape
 //   teardrop2d(r=30, ang=30);
@@ -1143,8 +1143,8 @@ function teardrop2d(r, ang=45, cap_h, d, anchor=CENTER, spin=0) =
 //   tangent = The angle in degrees of the tangent point for the joining arcs, measured away from the Y axis.  Default: 30
 //   ---
 //   d = The diameter of the end circles.
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
 // Examples(2D):
 //   glued_circles(r=15, spread=40, tangent=45);
 //   glued_circles(d=30, spread=30, tangent=30);
@@ -1221,8 +1221,8 @@ function _superformula(theta,m1,m2,n1,n2=1,n3=1,a=1,b=1) =
 //   r = Radius of the shape.  Scale shape to fit in a circle of radius r.
 //   ---
 //   d = Diameter of the shape.  Scale shape to fit in a circle of diameter d.
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
 //   atype = Select "hull" or "intersect" style anchoring.  Default: "hull". 
 // Example(2D):
 //   supershape(step=0.5,m1=16,m2=16,n1=0.5,n2=0.5,n3=16,r=50);
@@ -1290,8 +1290,8 @@ module supershape(step=0.5,m1=4,m2=undef,n1,n2=undef,n3=undef,a=1,b=undef, r=und
 //   r = Radius of the shape.  Scale shape to fit in a circle of radius r.
 //   ---
 //   d = Diameter of the shape.  Scale shape to fit in a circle of diameter d.
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
 // Extra Anchors:
 //   "tip0", "tip1", etc. = Each tip has an anchor, pointing outwards.
 // Examples(2D):
diff --git a/shapes3d.scad b/shapes3d.scad
index 9c5b5c1..23433d0 100644
--- a/shapes3d.scad
+++ b/shapes3d.scad
@@ -31,9 +31,9 @@ use <builtins.scad>
 //   size = The size of the cube.
 //   center = If given, overrides `anchor`.  A true value sets `anchor=CENTER`, false sets `anchor=FRONT+LEFT+BOTTOM`.
 //   ---
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 // Example: Simple cube.
 //   cube(40);
 // Example: Rectangular cube.
@@ -112,9 +112,9 @@ function cube(size=1, center, anchor, spin=0, orient=UP) =
 //   trimcorners = If true, rounds or chamfers corners where three chamfered/rounded edges meet.  Default: `true`
 //   p1 = Align the cuboid's corner at `p1`, if given.  Forces `anchor=FRONT+LEFT+BOTTOM`.
 //   p2 = If given with `p1`, defines the cornerpoints of the cuboid.
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 // Example: Simple regular cube.
 //   cuboid(40);
 // Example: Cube with minimum cornerpoint given.
@@ -478,9 +478,9 @@ function cuboid(
 //   chamfer = The chamfer size for the vertical-ish edges of the prismoid.  If given as a list of four numbers, gives individual chamfers for each corner, in the order [X+Y+,X-Y+,X-Y-,X+Y-].  Default: 0 (no chamfer)
 //   chamfer1 = The chamfer size for the bottom of the vertical-ish edges of the prismoid.  If given as a list of four numbers, gives individual chamfers for each corner, in the order [X+Y+,X-Y+,X-Y-,X+Y-].
 //   chamfer2 = The chamfer size for the top of the vertical-ish edges of the prismoid.  If given as a list of four numbers, gives individual chamfers for each corner, in the order [X+Y+,X-Y+,X-Y-,X+Y-].
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 //
 // See Also: rounded_prism()
 //
@@ -660,9 +660,9 @@ function prismoid(
 // Arguments:
 //   size = Width of the octahedron, tip to tip.
 //   ---
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 // Example:
 //   octahedron(size=40);
 // Example: Anchors
@@ -738,9 +738,9 @@ function octahedron(size=1, anchor=CENTER, spin=0, orient=UP) =
 //   ichamfer = The chamfer size for the inside edges of the rectangular tube.  Default: Same as `chamfer`
 //   ichamfer1 = The chamfer size for the inside bottom corner of the rectangular tube.
 //   ichamfer2 = The chamfer size for the inside top corner of the rectangular tube.
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `BOTTOM`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `BOTTOM`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 // Examples:
 //   rect_tube(size=50, wall=5, h=30);
 //   rect_tube(size=[100,60], wall=5, h=30);
@@ -895,9 +895,9 @@ function rect_tube(
 //   size = [width, thickness, height]
 //   center = If given, overrides `anchor`.  A true value sets `anchor=CENTER`, false sets `anchor=UP`.
 //   ---
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `FRONT+LEFT+BOTTOM`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `FRONT+LEFT+BOTTOM`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 //
 // Example: Centered
 //   wedge([20, 40, 15], center=true);
@@ -964,9 +964,9 @@ function wedge(size=[1,1,1], center, anchor, spin=0, orient=UP) =
 //   d2 = The top diameter of the cylinder.  (Before orientation.)
 //   r = The radius of the cylinder.
 //   d = The diameter of the cylinder.
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 // Example: By Radius
 //   xdistribute(30) {
 //       cylinder(h=40, r=10);
@@ -1069,9 +1069,9 @@ function cylinder(h, r1, r2, center, l, r, d, d1, d2, anchor, spin=0, orient=UP)
 //   rounding1 = The radius of the rounding on the bottom end of the cylinder.
 //   rounding2 = The radius of the rounding on the top end of the cylinder.
 //   realign = If true, rotate the cylinder by half the angle of one face.
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 //
 // Example: By Radius
 //   xdistribute(30) {
@@ -1245,7 +1245,7 @@ module cyl(
 //   d = Optional diameter of cylinder. (use instead of `r`)
 //   d1 = Optional diameter of left (X-) end of cylinder.
 //   d2 = Optional diameter of right (X+) end of cylinder.
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
 //
 // Example: By Radius
 //   ydistribute(50) {
@@ -1292,7 +1292,7 @@ module xcyl(h, r, d, r1, r2, d1, d2, l, anchor=CENTER)
 //   d = Diameter of cylinder.
 //   d1 = Diameter of front (Y-) end of one.
 //   d2 = Diameter of back (Y+) end of one.
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
 //
 // Example: By Radius
 //   xdistribute(50) {
@@ -1339,7 +1339,7 @@ module ycyl(h, r, d, r1, r2, d1, d2, l, anchor=CENTER)
 //   d = Diameter of cylinder.
 //   d1 = Diameter of front (Y-) end of one.
 //   d2 = Diameter of back (Y+) end of one.
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
 //
 // Example: By Radius
 //   xdistribute(50) {
@@ -1393,9 +1393,9 @@ module zcyl(h, r, d, r1, r2, d1, d2, l, anchor=CENTER)
 //   id1 = Inner diameter of bottom of tube.
 //   id2 = Inner diameter of top of tube.
 //   realign = If true, rotate the tube by half the angle of one face.
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 //
 // Example: These all Produce the Same Tube
 //   tube(h=30, or=40, wall=5);
@@ -1467,9 +1467,9 @@ module tube(
 //   d = diameter of pie slice.
 //   d1 = bottom diameter of pie slice.
 //   d2 = top diameter of pie slice.
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 //
 // Example: Cylindrical Pie Slice
 //   pie_slice(ang=45, l=20, r=30);
@@ -1522,9 +1522,9 @@ module pie_slice(
 //   d = Diameter of the sphere.
 //   circum = If true, the sphere is made large enough to circumscribe the sphere of the ideal side.  Otherwise inscribes.  Default: false (inscribes)
 //   style = The style of the sphere's construction. One of "orig", "aligned", "stagger", "octa", or "icosa".  Default: "orig"
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 // Example: By Radius
 //   sphere(r=50);
 // Example: By Diameter
@@ -1595,9 +1595,9 @@ function sphere(r, d, circum=false, style="orig", anchor=CENTER, spin=0, orient=
 //   ---
 //   d = Diameter of the spheroid.
 //   circum = If true, the spheroid is made large enough to circumscribe the sphere of the ideal side.  Otherwise inscribes.  Default: false (inscribes)
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 // Example: By Radius
 //   spheroid(r=50);
 // Example: By Diameter
@@ -1843,8 +1843,8 @@ function spheroid(r, style="aligned", d, circum=false, anchor=CENTER, spin=0, or
 //   ir = inside radius of the torus. (use with 'or', or 'od')
 //   od = outer diameter of the torus. (use with 'ir' or 'id')
 //   id = inside diameter of the torus. (use with 'or' or 'od')
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 //
 // Example:
 //   // These all produce the same torus.
@@ -1914,9 +1914,9 @@ module torus(
 //   d2 = Diameter of circular portion of the back end of the teardrop shape.
 //   cap_h1 = If given, height above center where the shape will be truncated, on the front side. Default: `undef` (no truncation)
 //   cap_h2 = If given, height above center where the shape will be truncated, on the back side. Default: `undef` (no truncation)
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 //
 // Extra Anchors:
 //   cap = The center of the top of the cap, oriented with the cap face normal.
@@ -1999,9 +1999,9 @@ module teardrop(h, r, ang=45, cap_h, r1, r2, d, d1, d2, cap_h1, cap_h2, l, ancho
 //   cap_h = If given, height above sphere center to truncate teardrop shape.  Default: `undef` (no truncation)
 //   ---
 //   d = diameter of spherical portion of bottom.
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 //
 // Example: Typical Shape
 //   onion(r=30, ang=30);
@@ -2046,9 +2046,9 @@ module onion(r, ang=45, cap_h, d, anchor=CENTER, spin=0, orient=UP)
 //   size = The font size used to create the text block.  Default: 10
 //   font = The name of the font used to create the text block.  Default: "Courier"
 //   ---
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `"baseline"`
-//   spin = Rotate this many degrees around the Z axis.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `"baseline"`
+//   spin = Rotate this many degrees around the Z axis.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 // See Also: attachable()
 // Extra Anchors:
 //   "baseline" = Anchors at the baseline of the text, at the start of the string.
@@ -2323,9 +2323,9 @@ module path_text(path, text, font, size, thickness, lettersize, offset=0, revers
 //   overlap = Overlap size for unioning with faces.
 //   ---
 //   d = Diameter of fillet.
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `FRONT+LEFT`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `FRONT+LEFT`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 //
 // Example:
 //   union() {
@@ -2390,9 +2390,9 @@ module interior_fillet(l=1.0, r, ang=90, overlap=0.01, d, anchor=FRONT+LEFT, spi
 //   style = The style of subdividing the quads into faces.  Valid options are "default", "alt", and "quincunx".  Default: "default"
 //   ---
 //   convexity = Max number of times a line could intersect a wall of the surface being formed. Module only.  Default: 10
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 // Example:
 //   heightfield(size=[100,100], bottom=-20, data=[
 //       for (y=[-180:4:180]) [
@@ -2515,9 +2515,9 @@ function heightfield(data, size=[100,100], bottom=-20, maxz=100, xrange=[-1:0.04
 //   alpha = transparency value.  Default: 1.0
 //   unit = unit to mark.  Scales the ruler marks to a different length.  Default: 1
 //   inch = set to true for a ruler scaled to inches (assuming base dimension is mm).  Default: false
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `LEFT+BACK+TOP`
-//   spin = Rotate this many degrees around the Z axis.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `LEFT+BACK+TOP`
+//   spin = Rotate this many degrees around the Z axis.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 // Examples(2D,Big):
 //   ruler(100,depth=3);
 //   ruler(100,depth=3,labels=true);
diff --git a/sliders.scad b/sliders.scad
index b02f39d..5b5685a 100644
--- a/sliders.scad
+++ b/sliders.scad
@@ -22,9 +22,9 @@
 //   base = Height of slider base.
 //   wall = Width of wall behind each side of the slider.
 //   ang = Overhang angle for slider, to facilitate supportless printig.
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 //   $slop = The printer-specific slop value to make parts fit just right.
 // Example:
 //   slider(l=30, base=10, wall=4, $slop=0.2, spin=90);
@@ -69,9 +69,9 @@ module slider(l=30, w=10, h=10, base=10, wall=5, ang=30, anchor=BOTTOM, spin=0,
 //   h = Height of slider.
 //   chamfer = Size of chamfer at end of rail.
 //   ang = Overhang angle for slider, to facilitate supportless printig.
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `BOTTOM`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `BOTTOM`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 // Example:
 //   rail(l=100, w=10, h=10);
 module rail(l=30, w=10, h=10, chamfer=1.0, ang=30, anchor=BOTTOM, spin=0, orient=UP)
diff --git a/threading.scad b/threading.scad
index 61cbbf5..a1ea105 100644
--- a/threading.scad
+++ b/threading.scad
@@ -31,9 +31,9 @@
 //   higbee = Length to taper thread ends over.  Default: 0
 //   higbee1 = Length to taper bottom thread end over.
 //   higbee2 = Length to taper top thread end over.
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 //   $slop = The printer-specific slop value, which adds clearance (`4*$slop`) to internal threads.
 // Example(2D):
 //   projection(cut=true)
@@ -125,9 +125,9 @@ module threaded_rod(
 //   bevel = if true, bevel the thread ends.  Default: false
 //   bevel1 = if true bevel the bottom end.
 //   bevel2 = if true bevel the top end. 
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 //   $slop = The printer-specific slop value, which adds clearance (`4*$slop`) to internal threads.
 // Examples(Med):
 //   threaded_nut(od=16, id=8, h=8, pitch=1.25, $slop=0.05, $fa=1, $fs=1);
@@ -213,9 +213,9 @@ module threaded_nut(
 //   higbee1 = Length to taper bottom thread end over.
 //   higbee2 = Length to taper top thread end over.
 //   center = If given, overrides `anchor`.  A true value sets `anchor=CENTER`, false sets `anchor=UP`.
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 //   $slop = The printer-specific slop value, which adds clearance (`4*$slop`) to internal threads.
 // Example(2D):
 //   projection(cut=true)
@@ -288,9 +288,9 @@ module trapezoidal_threaded_rod(
 //   bevel = if true, bevel the thread ends.  Default: false
 //   bevel1 = if true bevel the bottom end.
 //   bevel2 = if true bevel the top end. 
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 //   $slop = The printer-specific slop value, which adds clearance (`4*$slop`) to internal threads.
 // Examples(Med):
 //   trapezoidal_threaded_nut(od=16, id=8, h=8, pitch=2, $slop=0.1, anchor=UP);
@@ -349,9 +349,9 @@ module trapezoidal_threaded_nut(
 //   higbee = Length to taper thread ends over.  Default: 0 (No higbee thread tapering)
 //   higbee1 = Length to taper bottom thread end over.
 //   higbee2 = Length to taper top thread end over.
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 //   $slop = The printer-specific slop value, which adds clearance (`4*$slop`) to internal threads.
 // Example(2D):
 //   projection(cut=true)
@@ -400,9 +400,9 @@ module acme_threaded_rod(
 //   bevel = if true, bevel the thread ends.  Default: false
 //   bevel1 = if true bevel the bottom end.
 //   bevel2 = if true bevel the top end. 
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 //   $slop = The printer-specific slop value, which adds clearance (`4*$slop`) to internal threads.
 // Examples(Med):
 //   acme_threaded_nut(od=16, id=3/8*INCH, h=8, tpi=8, $slop=0.05);
@@ -450,9 +450,9 @@ module acme_threaded_nut(
 //   bevel2 = if true bevel the top end. 
 //   hollow = If true, create a pipe with the correct internal diameter.
 //   internal = If true, make this a mask for making internal threads.
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 //   $slop = The printer-specific slop value, which adds clearance (`4*$slop`) to internal threads.p
 // Example(2D): The straight gray rectangle reveals the tapered threads.  
 //   projection(cut=true) npt_threaded_rod(size=1/4, orient=BACK);
@@ -564,9 +564,9 @@ module npt_threaded_rod(
 //   higbee2 = Length to taper top thread end over.
 //   d1 = Bottom outside diameter of threads.
 //   d2 = Top outside diameter of threads.
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 //   $slop = The printer-specific slop value, which adds clearance (`4*$slop`) to internal threads.
 // Example(2D):
 //   projection(cut=true)
@@ -624,9 +624,9 @@ module buttress_threaded_rod(
 //   bevel = if true, bevel the thread ends.  Default: false
 //   bevel1 = if true bevel the bottom end.
 //   bevel2 = if true bevel the top end. 
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 //   $slop = The printer-specific slop value, which adds clearance (`4*$slop`) to internal threads.
 // Examples(Med):
 //   buttress_threaded_nut(od=16, id=8, h=8, pitch=1.25, left_handed=true, $slop=0.05, $fa=1, $fs=1);
@@ -679,9 +679,9 @@ module buttress_threaded_nut(
 //   higbee2 = Length to taper top thread end over.
 //   d1 = Bottom outside diameter of threads.
 //   d2 = Top outside diameter of threads.
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 //   $slop = The printer-specific slop value, which adds clearance (`4*$slop`) to internal threads.
 // Example(2D):
 //   projection(cut=true)
@@ -732,9 +732,9 @@ module square_threaded_rod(
 //   bevel1 = if true bevel the bottom end.
 //   bevel2 = if true bevel the top end. 
 //   starts = The number of lead starts.  Default = 1
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 //   $slop = The printer-specific slop value, which adds clearance (`4*$slop`) to internal threads.
 // Examples(Med):
 //   square_threaded_nut(od=16, id=10, h=10, pitch=2, starts=2, $slop=0.1, $fn=32);
@@ -778,9 +778,9 @@ module square_threaded_nut(
 //   bevel1 = if true bevel the bottom end.
 //   bevel2 = if true bevel the top end. 
 //   internal = If true, make this a mask for making internal threads.
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 //   $slop = The printer-specific slop value, which adds clearance (`4*$slop`) to internal threads.
 // Example(2D): Thread Profile, ball_diam=4, ball_arc=100
 //   projection(cut=true) ball_screw_rod(d=10, l=15, pitch=5, ball_diam=4, ball_arc=100, orient=BACK, $fn=24);
@@ -864,9 +864,9 @@ module ball_screw_rod(
 //   higbee1 = Angle to taper bottom thread end over.
 //   higbee2 = Angle to taper top thread end over.
 //   center = If given, overrides `anchor`.  A true value sets `anchor=CENTER`, false sets `anchor=UP`.
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 //   $slop = The printer-specific slop value, which adds clearance (`4*$slop`) to internal threads.
 // Example(2DMed): Example Tooth Profile
 //   pitch = 2;
@@ -1060,9 +1060,9 @@ module generic_threaded_rod(
 //   bevel2 = if true bevel the top end.
 //   id1 = inner diameter at the bottom
 //   id2 = inner diameter at the top
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 //   $slop = The printer-specific slop value, which adds clearance (`4*$slop`) to internal threads.
 module generic_threaded_nut(
     od,
@@ -1147,9 +1147,9 @@ module generic_threaded_nut(
 //   higbee = Length to taper thread ends over.  Default: 0
 //   higbee1 = Length to taper bottom thread end over.
 //   higbee2 = Length to taper top thread end over.
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 // Example(2DMed): Typical Tooth Profile
 //   pitch = 2;
 //   depth = pitch * cos(30) * 5/8;
diff --git a/vnf.scad b/vnf.scad
index 92b7ce5..754acda 100644
--- a/vnf.scad
+++ b/vnf.scad
@@ -784,9 +784,9 @@ function _slice_3dpolygons(polys, dir, cuts) =
 //   convexity = Max number of times a line could intersect a wall of the shape.
 //   extent = If true, calculate anchors by extents, rather than intersection.  Default: true.
 //   cp = Centerpoint for determining intersection anchors or centering the shape.  Determintes the base of the anchor vector.  Can be "centroid", "mean", "box" or a 3D point.  Default: "centroid"
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `"origin"`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `"origin"`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 //   atype = Select "hull" or "intersect" anchor type.  Default: "hull"
 module vnf_polyhedron(vnf, convexity=2, extent=true, cp="centroid", anchor="origin", spin=0, orient=UP, atype="hull") {
     vnf = is_vnf_list(vnf)? vnf_join(vnf) : vnf;
diff --git a/walls.scad b/walls.scad
index 1284fa7..ad1ace5 100644
--- a/walls.scad
+++ b/walls.scad
@@ -26,9 +26,9 @@
 //   l = Length of the strut.
 //   wall = height of rectangular portion of the strut.
 //   ang = angle that the trianglar side will converge at.
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 //
 // Example:
 //   narrowing_strut(w=10, l=100, wall=5, ang=30);
@@ -73,9 +73,9 @@ module narrowing_strut(w=10, l=100, wall=5, ang=30, anchor=BOTTOM, spin=0, orien
 //   ang = Maximum overhang angle of diagonal brace.
 //   braces = If true, adds diagonal crossbraces for strength.
 //   strut = The width of the borders and diagonal braces.  Default: `thick/2`
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 //
 // Example: Typical Shape
 //   thinning_wall(h=50, l=80, thick=4);
@@ -252,9 +252,9 @@ module thinning_wall(h=50, l=100, thick=5, ang=30, braces=false, strut, wall, an
 //   wall = the thickness of the thinned portion of the wall.
 //   diagonly = boolean, which denotes only the diagonal side (hypotenuse) should be thick.
 //   center = If true, centers shape.  If false, overrides `anchor` with `UP+BACK`.
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 //
 // Example: Centered
 //   thinning_triangle(h=50, l=80, thick=4, ang=30, strut=5, wall=2, center=true);
@@ -312,9 +312,9 @@ module thinning_triangle(h=50, l=100, thick=5, ang=30, strut=5, wall=3, diagonly
 //   maxang = maximum overhang angle of cross-braces.
 //   max_bridge = maximum bridging distance between cross-braces.
 //   strut = the width of the cross-braces.
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 //
 // Example: Typical Shape
 //   sparse_strut(h=40, l=100, thick=3);
@@ -381,9 +381,9 @@ module sparse_strut(h=50, l=100, thick=4, maxang=30, strut=5, max_bridge=20, anc
 //   maxang = maximum overhang angle of cross-braces.
 //   max_bridge = maximum bridging distance between cross-braces.
 //   strut = the width of the cross-braces.
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 //
 // Example(Med): Typical Shape
 //   sparse_strut3d(h=30, w=30, l=100);
@@ -478,9 +478,9 @@ module sparse_strut3d(h=50, l=100, w=50, thick=3, maxang=40, strut=3, max_bridge
 //   thick = thickness of strut wall.
 //   strut = the width of the cross-braces.
 //   wall = thickness of corrugations.
-//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#anchor).  Default: `CENTER`
-//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#spin).  Default: `0`
-//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#orient).  Default: `UP`
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 //
 // Example: Typical Shape
 //   corrugated_wall(h=50, l=100);