diff --git a/runtime/doc/options.txt b/runtime/doc/options.txt
index cf064e1..034c04f 100644
--- a/runtime/doc/options.txt
+++ b/runtime/doc/options.txt
@@ -1,4 +1,4 @@
-*options.txt*	For Vim version 9.1.  Last change: 2025 Jul 03
+*options.txt*	For Vim version 9.1.  Last change: 2025 Jul 05
 
 
 		  VIM REFERENCE MANUAL	  by Bram Moolenaar
@@ -2123,15 +2123,12 @@
 		name of a function or a |Funcref|.  For |Funcref| values,
 		spaces must be escaped with a backslash ('\'), and commas with
 		double backslashes ('\\') (see |option-backslash|).
+		Unlike other sources, functions can provide completions starting
+		from a non-keyword character before the cursor, and their
+		start position for replacing text may differ from other sources.
 		If the Dict returned by the {func} includes {"refresh": "always"},
 		the function will be invoked again whenever the leading text
 		changes.
-		Completion matches are always inserted at the keyword
-		boundary, regardless of the column returned by {func} when
-		a:findstart is 1.  This ensures compatibility with other
-		completion sources.
-		To make further modifications to the inserted text, {func}
-		can make use of |CompleteDonePre|.
 		If generating matches is potentially slow, |complete_check()|
 		should be used to avoid blocking and preserve editor
 		responsiveness.