diff --git a/attachments.scad b/attachments.scad
index 6b4d19c..922fc5f 100644
--- a/attachments.scad
+++ b/attachments.scad
@@ -2350,7 +2350,7 @@ function attach_geom(
 /// Topics: Attachments
 /// See Also: reorient(), attachable()
 //
-f// Usage:
+// Usage:
 //   bool = _attach_geom_2d(geom);
 // Description:
 //   Returns true if the given attachment geometry description is for a 2D shape.
@@ -2952,7 +2952,7 @@ module anchor_arrow(s=10, color=[0.333,0.333,1], flag=true, $tag="anchor-arrow",
 // Module: anchor_arrow2d()
 // Synopsis: Shows a 2d anchor orientation arrow.
 // Topics: Attachments
-// See Also: anchor_arrow3d(), show_anchors(), expose_anchors(), frame_ref()
+// See Also: anchor_arrow(), show_anchors(), expose_anchors(), frame_ref()
 //
 // Usage:
 //   anchor_arrow2d([s], [color], [flag]);
diff --git a/color.scad b/color.scad
index b286d5f..3987bc2 100644
--- a/color.scad
+++ b/color.scad
@@ -16,10 +16,12 @@ use <builtins.scad>
 // Section: Coloring Objects
 
 // Module: recolor()
+// Synopsis:  Sets the color for attachable children and all their descendants.
+// Topics: Attachments
+// See Also: color_this(), hsl(), hsv()
+//
 // Usage:
 //   recolor([c]) CHILDREN;
-// Topics: Attachments
-// See Also: color_this()
 // Description:
 //   Sets the color for attachable children and all their descendants.  This only works with attachables and you cannot
 //   have any color() modules above it in any parents, only other recolor() or color_this() modules.
@@ -43,10 +45,12 @@ module recolor(c="default")
 
 
 // Module: color_this()
+// Synopsis: Sets the color for children at the current level only.
+// Topics: Attachments
+// See Also: recolor(), hsl(), hsv()
+//
 // Usage:
 //   color_this([c]) CHILDREN;
-// Topics: Attachments
-// See Also: recolor()
 // Description:
 //   Sets the color for children at one level, reverting to the previous color for further descendants.
 //   This works only with attachables and you cannot have any color() modules above it in any parents,
@@ -72,6 +76,10 @@ module color_this(c="default")
 
 
 // Module: rainbow()
+// Synopsis: Iterates through a list, displaying children in different colors.
+// Topics: List Handling
+// See Also: hsl(), hsv()
+//
 // Usage:
 //   rainbow(list,[stride],[maxhues],[shuffle],[seed]) CHILDREN;
 // Description:
@@ -111,6 +119,9 @@ module rainbow(list, stride=1, maxhues, shuffle=false, seed)
 // Section: Colorspace Conversion
 
 // Function&Module: hsl()
+// Synopsis: Sets the color of children to a specified hue, saturation, lightness and optional alpha channel value.
+// See Also: hsv(), recolor(), color_this()
+//
 // Usage:
 //   hsl(h,[s],[l],[a]) CHILDREN;
 //   rgb = hsl(h,[s],[l],[a]);
@@ -146,6 +157,9 @@ module hsl(h,s=1,l=0.5,a=1)
 
 
 // Function&Module: hsv()
+// Synopsis: Sets the color of children to a hue, saturation, value and optional alpha channel value.
+// See Also: hsl(), recolor(), color_this()
+//
 // Usage:
 //   hsv(h,[s],[v],[a]) CHILDREN;
 //   rgb = hsv(h,[s],[v],[a]);