diff --git a/TODO b/TODO
index dacaa1a..7891d13 100644
--- a/TODO
+++ b/TODO
@@ -65,7 +65,7 @@
 ----
 
 
-- Do testmode substitions.
+- Add warning at beginning of doc about power/danger of program.
 
 - Note importance of giving variables distinctive names so they do
   not accidentally get substituted.