diff --git a/undocumented_features/in_shape_demo.scad b/undocumented_features/in_shape_demo.scad
deleted file mode 100644
index 21547bac..00000000
--- a/undocumented_features/in_shape_demo.scad
+++ /dev/null
@@ -1,32 +0,0 @@
-include <shape_taiwan.scad>;
-include <in_shape.scad>;
-
-/*    
-points = [
-   [10, 0],
-   [10, 10],
-   [-10, 10], 
-   [-10, -10]
-];*/
-
-
-points = shape_taiwan(30); 
-%polygon(points);
-pt = [-10, 9];
-
-n = 200;
-xs = rands(-10, 10, n);
-ys = rands(-18, 18, n);
-
-pts = [
-    for(i = [0:n]) 
-        let(p = [xs[i], ys[i]]) 
-        if(in_shape(points, p, true))
-        p
-    ]; 
-
-for(p = pts) {
-    translate(p) circle(.2); 
-}
-
-    
\ No newline at end of file
diff --git a/undocumented_features/undocumented_note.md b/undocumented_features/undocumented_note.md
index 0e3a1a12..2103fbc7 100644
--- a/undocumented_features/undocumented_note.md
+++ b/undocumented_features/undocumented_note.md
@@ -1,12 +1,3 @@
-voronoi, bend_extrude:
-    https://www.thingiverse.com/thing:3650115
-
-voronoi3d
-    3d version of voronoi, slow but workable
-
-in_shape, in_line
-    in_shape_demo.scad
-
 midpt_smooth
     midpt_smooth.scad