diff --git a/runtime/doc/repeat.txt b/runtime/doc/repeat.txt
index e344ec7..04d85d7 100644
--- a/runtime/doc/repeat.txt
+++ b/runtime/doc/repeat.txt
@@ -1,4 +1,4 @@
-*repeat.txt*    For Vim version 8.2.  Last change: 2021 Jun 27
+*repeat.txt*    For Vim version 8.2.  Last change: 2021 Sep 09
 
 
 		  VIM REFERENCE MANUAL    by Bram Moolenaar
@@ -893,8 +893,12 @@
 		Sets a breakpoint, that will break whenever the {expression}
 		evaluates to a different value. Example: >
 			:breakadd expr g:lnum
-
 <		Will break, whenever the global variable lnum changes.
+
+		Errors in evaluation are suppressed, you can use the name of a
+		variable that does not exist yet.  This also means you will
+		not notice anything if the expression has a mistake.
+
 		Note if you watch a |script-variable| this will break
 		when switching scripts, since the script variable is only
 		valid in the script where it has been defined and if that