diff --git a/README.md b/README.md
index d926f86..a6285e6 100644
--- a/README.md
+++ b/README.md
@@ -58,6 +58,7 @@ some more practical uses would be things like:
     (avatar seems to be somewhere in the sprites, 
     after any numeric-ID sprites and before any alphabetic-ID sprites...)
 * check multi-line endings/dialogues
+* handle room wall array
 
 ### tidy up