diff --git a/runtime/doc/fold.txt b/runtime/doc/fold.txt
index f11ca08..7c702ff 100644
--- a/runtime/doc/fold.txt
+++ b/runtime/doc/fold.txt
@@ -1,4 +1,4 @@
-*fold.txt*      For Vim version 9.0.  Last change: 2022 Jan 22
+*fold.txt*      For Vim version 9.0.  Last change: 2022 Oct 01
 
 
 		  VIM REFERENCE MANUAL    by Bram Moolenaar
@@ -503,7 +503,7 @@
 
 This shows the first line of the fold, with "/*", "*/" and "{{{" removed.
 Note the use of backslashes to avoid some characters to be interpreted by the
-":set" command.  It's simpler to define a function and call that: >
+":set" command.  It is much simpler to define a function and call it: >
 
     :set foldtext=MyFoldText()
     :function MyFoldText()
@@ -512,6 +512,9 @@
     :  return v:folddashes .. sub
     :endfunction
 
+The advantage of using a function call without arguments is that it is faster,
+see |expr-option-function|.
+
 Evaluating 'foldtext' is done in the |sandbox|.  The current window is set to
 the window that displays the line.  The context is set to the script where the
 option was last set.