diff --git a/runtime/doc/eval.txt b/runtime/doc/eval.txt
index 50da2de..db5ae56 100644
--- a/runtime/doc/eval.txt
+++ b/runtime/doc/eval.txt
@@ -1293,6 +1293,7 @@
 					*v:char* *char-variable*
 v:char		Argument for evaluating 'formatexpr' and used for the typed
 		character when using <expr> in an abbreviation |:map-<expr>|.
+		It is also used by the |InsertPreChar| event.
 
 			*v:charconvert_from* *charconvert_from-variable*
 v:charconvert_from