-The @strong{mail back end} where mairix should stores its
-searches. Currently @code{nnmaildir}, @code{nnimap} and @code{nnml} are
-supported. As explained above, for locally stored mails, this can be an
-existing mail back end where you store your mails. However, you can also
-create e.g. a new @code{nnmaildir} server exclusively for
-@code{nnmairix} in your secondary select methods (@pxref{Finding the
-News}). If you want to use mairix remotely on an @acronym{IMAP} server,
-you have to choose the corresponding @code{nnimap} back end here.
+The name of the @strong{back end server} where mairix should store its
+searches. This must be a full server name, like @code{nnml:mymail}.
+Just hit @kbd{TAB} to see the available servers. Currently, servers
+which are accessed through @code{nnmaildir}, @code{nnimap} and
+@code{nnml} are supported. As explained above, for locally stored
+mails, this can be an existing server where you store your mails.
+However, you can also create e.g. a new @code{nnmaildir} server
+exclusively for @code{nnmairix} in your secondary select methods
+(@pxref{Finding the News}). If you want to use mairix remotely on an
+@acronym{IMAP} server, you have to choose the corresponding
+@code{nnimap} server here.