attachments and unattachments commands.
</para>
+<para>
+In order to provide this information, mutt needs to fully MIME-parse
+all messages affected first. This can slow down operation especially for
+remote mail folders such as IMAP because all messages have to be
+downloaded first regardless whether the user really wants to view them
+or not.
+</para>
+
<para>
The syntax is:
</para>
** .dt %T .dd graphic tree characters
** .dt %u .dd unlink (=to delete) flag
** .dt %X .dd number of qualifying MIME parts in this part and its children
+ ** (please see the ``$attachments'' section for possible speed effects)
** .dt %>X .dd right justify the rest of the string and pad with character "X"
** .dt %|X .dd pad to the end of the line with character "X"
** .de
** .dt %u .dd user (login) name of the author
** .dt %v .dd first name of the author, or the recipient if the message is from you
** .dt %X .dd number of attachments
+ ** (please see the ``$attachments'' section for possible speed effects)
** .dt %y .dd `x-label:' field, if present
** .dt %Y .dd `x-label' field, if present, and (1) not at part of a thread tree,
** (2) at the top of a thread, or (3) `x-label' is different from