diff --git a/constants.scad b/constants.scad
index 1590a29..191d0ac 100644
--- a/constants.scad
+++ b/constants.scad
@@ -56,7 +56,7 @@ _UNDEF="LRG+HX7dy89RyHvDlAKvb9Y04OTuaikpx205CTh8BSI";
 //     for (i=[0:holes-1]) {
 //       right((i-holes/2+0.5)*(holesize.x+gap)) {
 //         s = min_slop + slop_step * i;
-//         tags("holes") {
+//         tag("holes") {
 //           cuboid([holesize.x + 2*s, holesize.y + 2*s, h+0.2]);
 //           fwd(w/2-1) xrot(90) linear_extrude(1.1) {
 //             text(
diff --git a/modular_hose.scad b/modular_hose.scad
index d9980c0..954e527 100644
--- a/modular_hose.scad
+++ b/modular_hose.scad
@@ -201,7 +201,7 @@ module modular_hose(size, type, clearance=0, waist_len, anchor=BOTTOM, spin=0,or
 //      diff("remove")
 //        cuboid(50){
 //          attach(TOP) modular_hose(1/2, "ball");
-//          up(0.01)position(TOP+RIGHT)tags("remove")
+//          up(0.01)position(TOP+RIGHT)tag("remove")
 //            rot(180)
 //            xrot(-90)
 //            rotate_extrude(angle=135)
diff --git a/shapes3d.scad b/shapes3d.scad
index 0844691..c0ea4a3 100644
--- a/shapes3d.scad
+++ b/shapes3d.scad
@@ -899,7 +899,7 @@ module rect_tube(
             anchor=CTR
         ) {
             children();
-            tags("_H_o_L_e_") prismoid(
+            tag("_H_o_L_e_") prismoid(
                 isize1, isize2, h=h+0.05, shift=shift,
                 rounding=irounding, rounding1=irounding1, rounding2=irounding2,
                 chamfer=ichamfer, chamfer1=ichamfer1, chamfer2=ichamfer2,
diff --git a/threading.scad b/threading.scad
index 2ce8cfc..0dac540 100644
--- a/threading.scad
+++ b/threading.scad
@@ -551,7 +551,7 @@ module acme_threaded_nut(
 // Example:
 //   diff("remove"){
 //      cuboid([40,40,40])
-//      tags("remove"){
+//      tag("remove"){
 //        up(.01)position(TOP)
 //            npt_threaded_rod(size=3/4, $fn=96, internal=true, $slop=0.1, anchor=TOP);
 //        cyl(d=3/4*INCH, l=42, $fn=32);