--- a/Sprites.wiki	Fri Nov 17 04:37:02 2017 +0000
+++ b/Sprites.wiki	Fri Nov 17 04:42:27 2017 +0000
@@ -212,4 +212,7 @@
 || `sprCloudL` ||
 || `sprSDCloudL` ||
 || `sprDuck` ||
-|| `sprHandDuck` ||
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+|| `sprHandDuck` ||
+
+## Custom sprites
+The sprite IDs `sprCustom1` to `sprCustom8` are not directly used in the engine. Instead, they are supposed to be overwritten in a [https://hedgewars.org/kb/HWPFormat HWP file]. This allows you to add custom sprites in a HWP without destroying game-relevant sprites.
\ No newline at end of file