Add missing part of patch
diff --git a/runtime/doc/usr_41.txt b/runtime/doc/usr_41.txt
index e2d32f9..e2d5cfe 100644
--- a/runtime/doc/usr_41.txt
+++ b/runtime/doc/usr_41.txt
@@ -737,6 +737,8 @@
fnameescape() escape a file name for use with a Vim command
tr() translate characters from one set to another
strtrans() translate a string to make it printable
+ keytrans() translate internal keycodes to a form that
+ can be used by |:map|
tolower() turn a string to lowercase
toupper() turn a string to uppercase
charclass() class of a character