diff --git a/runtime/doc/insert.txt b/runtime/doc/insert.txt
index 61aaa6f..a0ef63c 100644
--- a/runtime/doc/insert.txt
+++ b/runtime/doc/insert.txt
@@ -1,4 +1,4 @@
-*insert.txt*    For Vim version 7.0f.  Last change: 2006 Apr 25
+*insert.txt*    For Vim version 7.0f.  Last change: 2006 Apr 26
 
 
 		  VIM REFERENCE MANUAL    by Bram Moolenaar
@@ -610,6 +610,9 @@
 ends CTRL-X mode (any key that is not a valid CTRL-X mode command) is mapped.
 Also, when doing completion with 'complete' mappings apply as usual.
 
+Note: While completion is active Insert mode can't be used recursively.
+Mappings that somehow invoke ":normal i.." will generate an E523 error.
+
 The following mappings are suggested to make typing the completion commands
 a bit easier (although they will hide other commands): >
     :inoremap ^] ^X^]