diff --git a/runtime/doc/usr_41.txt b/runtime/doc/usr_41.txt
index 7bb363b..435002b 100644
--- a/runtime/doc/usr_41.txt
+++ b/runtime/doc/usr_41.txt
@@ -1,4 +1,4 @@
-*usr_41.txt*	For Vim version 8.2.  Last change: 2022 Jan 28
+*usr_41.txt*	For Vim version 8.2.  Last change: 2022 Feb 11
 
 		     VIM USER MANUAL - by Bram Moolenaar
 
@@ -2512,6 +2512,8 @@
 For undoing the effect of an indent script, the b:undo_indent variable should
 be set accordingly.
 
+Both these variables use legacy script syntax, not |Vim9| syntax.
+
 
 FILE NAME