diff --git a/runtime/doc/builtin.txt b/runtime/doc/builtin.txt
index a065fce..a695547 100644
--- a/runtime/doc/builtin.txt
+++ b/runtime/doc/builtin.txt
@@ -1,4 +1,4 @@
-*builtin.txt*	For Vim version 9.0.  Last change: 2023 Feb 14
+*builtin.txt*	For Vim version 9.0.  Last change: 2023 Feb 27
 
 
 		  VIM REFERENCE MANUAL	  by Bram Moolenaar
@@ -2569,8 +2569,7 @@
 extendnew({expr1}, {expr2} [, {expr3}])			*extendnew()*
 		Like |extend()| but instead of adding items to {expr1} a new
 		List or Dictionary is created and returned.  {expr1} remains
-		unchanged.  Items can still be changed by {expr2}, if you
-		don't want that use |deepcopy()| first.
+		unchanged.
 
 
 feedkeys({string} [, {mode}])				*feedkeys()*
@@ -9811,6 +9810,8 @@
 		{time} is the waiting time in milliseconds. This is the
 		minimum time before invoking the callback.  When the system is
 		busy or Vim is not waiting for input the time will be longer.
+		Zero can be used to execute the callback when Vim is back in
+		the main loop.
 
 		{callback} is the function to call.  It can be the name of a
 		function or a |Funcref|.  It is called with one argument, which