Index: index.html
===================================================================
--- index.html	(revision 9630)
+++ index.html	(revision 9631)
@@ -61,7 +61,7 @@
 	<li> exploit that layers have different drawing color on screen: e.g. there
 	     can be a signal and a gnd layers with different color in the same
 	     layer group, on the same physical layer.
-	<li> on composite-groups (mask, paste, [TODO]), layers are combined using
+	<li> on composite-groups (mask, paste, silk, [TODO]), layers are combined using
 	     their properties: some layers may draw, others may clear; some layers
 	     may contain auto-generated objects. The order of layers does matter
 	     in draw-clear combinations.