send. The default method is to use the @dfn{archive virtual server} to
store the messages. If you want to disable this completely, the
@code{gnus-message-archive-group} variable should be @code{nil}. The
-default is "sent.%Y-%m", which gives you one archive group per month.
+default is @code{"sent.%Y-%m"}, which gives you one archive group per month.
For archiving interesting messages in a group you read, see the
@kbd{B c} (@code{gnus-summary-copy-article}) command (@pxref{Mail