@item gnus-expert-user
@vindex gnus-expert-user
If this variable is non-@code{nil}, you will seldom be asked any
-questions by Gnus. It will simply assume you know what you're doing, no
-matter how strange.
+questions by Gnus. It will simply assume you know what you're doing,
+no matter how strange. For example, quitting Gnus, exiting a group
+without an update, catching up with a group, deleting expired
+articles, and replying by mail to a news message will not require
+confirmation.
@item gnus-interactive-catchup
@vindex gnus-interactive-catchup