--- a/PresetMaps.wiki	Tue Dec 31 04:30:41 2013 +0000
+++ b/PresetMaps.wiki	Tue Dec 31 19:40:26 2013 +0000
@@ -60,7 +60,7 @@
   * Usually _width/length ratio_ of 2:1
   * Typical size: 2048 x 1024
   * Max size: no limit, 0.9.18+.  4096 x 2048 or less in 0.9.17 and earlier.  There are a few practical limits to map size that should be examined for people trying to make very large maps.
-    * SDL 1.2 - SDL 1.2 can only load maps that are <=16,384px wide, and <=65,536px high. SDL 1.2 rect is only capable of handling a map that is <=32767 high, making that the real effective limit.
+    * SDL 1.2 - SDL 1.2 can only load maps that are <=16,384px wide, and <=65,536px high. SDL 1.2 rect is only capable of handling a map that is <=32768 high, while behaviour in Hedgewars 0.9.20 or lower forces <=16,384 if using a mask.png without a map.png.
     * SDL 2.0 - SDL 2.0 failed to load a 999,936x512 map. A 499,968x512 map succeeded. Those would use ~244MiB/~122MiB of your graphics card with Blurry Land enabled, and ~977MiB/~488MiB without it.
     * GIMP.  GIMP 2.8 can only create PNGs that are 262,144px wide or high - is an arbitrary hardcoded sanity check.  GIMP 2.10 allows 524,288 wide or high.
     * libpng - libpng can only load maps that are < 1 million px wide or high, with default configuration.