man: note for systemctl clean --what that commas separate values

diff --git a/man/systemctl.xml b/man/systemctl.xml
index ed0cafff8b485bc2e91312a6b16d9589ad911306..bfd684dc8679dc9dd902a46d011c246bc7209506 100644 (file)
--- a/man/systemctl.xml
+++ b/man/systemctl.xml
@@ -573,7 +573,8 @@ Jan 12 10:46:45 example.com bluetoothd[8900]: gatt-time-server: Input/output err
             command only applies to units that use either of these settings. If <option>--what=</option> is
             not specified, the cache and runtime data as well as the file descriptor store are removed (as
             these three types of resources are generally redundant and reproducible on the next invocation of
-            the unit). Note that the specified units must be stopped to invoke this operation.</para>
+            the unit). Multiple values can be seperated by commas. Note that the specified units must be stopped
+            to invoke this operation.</para>
 
             <table>
               <title>