runtime(doc): clarify the use of filters and external commands

related: #16044

Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/runtime/doc/various.txt b/runtime/doc/various.txt
index 4c26794..5f0ad06 100644
--- a/runtime/doc/various.txt
+++ b/runtime/doc/various.txt
@@ -1,4 +1,4 @@
-*various.txt*   For Vim version 9.1.  Last change: 2024 Oct 05
+*various.txt*   For Vim version 9.1.  Last change: 2024 Nov 12
 
 
 		  VIM REFERENCE MANUAL    by Bram Moolenaar
@@ -254,7 +254,8 @@
 
 							*:!cmd* *:!*
 :!{cmd}			Execute {cmd} with the shell.  See also the 'shell'
-			and 'shelltype' option.
+			and 'shelltype' option.  For the filter command, see
+			|:range!|.
 							*E34*
 			Any '!' in {cmd} is replaced with the previous
 			external command (see also 'cpoptions').  But not when