--- a/PresetMaps.wiki	Tue Dec 31 19:40:26 2013 +0000
+++ b/PresetMaps.wiki	Fri Jan 03 20:09:49 2014 +0000
@@ -82,7 +82,7 @@
   * Red pixels will be indestructible terrain (regardless of game mode settings)
   * Black pixels will be terrain with background texture applied (Note: Adding any black pixels removes erasure protection from areas where the map.png is solid but the mask.png is transparent) - 0.9.17+
   * Blue pixels will be ice - 0.9.17+
-  * Green pixels block portals - 0.9.18+  They are defined as "bouncy" in the code, although this functionality is not implemented, and could be susceptible to change.  If bouncing is implemented and the green pixels should only block portals, place a dotted line of single red pixels a few pixels above the green, spaced a few pixels apart.
+  * Green pixels block portals - 0.9.18+  In 0.9.20+ they are implemented as "bouncy" - this is used for the Rubber weapon.  This mask can be used normally for maps or theme objects.  If bouncing is implemented and the green pixels should only block portals, place a dotted line of single red/black/white pixels a few pixels above the green, spaced a few pixels apart.  This will keep most objects from interacting with the green, but prevent portal spawning.
 
 *Examples:*
   * [http://hedgewars.googlecode.com/hg/share/hedgewars/Data/Maps/portal/mask.png Mask]  of [http://hedgewars.googlecode.com/hg/share/hedgewars/Data/Maps/portal/map.png Portal Map]