-will pack copies of messages from a folder, into a single
-file.
-The messages are separated using mbox (uucp) style delimiters.
-This is the format used by most mail clients (elm, mailx, etc.).
-.PP
-You may specify the name of the file in which to use with the
-.B \-file
-.I name
-switch. If you do not specify the name of the file, it
-will default to
-.RI \*(lq msgbox \*(rq.
-.PP
-If the given file name points to an existing file, then the specified
-messages will be appended to the end of the file, otherwise the file
-will be created and the messages appended.
+will pack copies of messages from a folder, into mbox format and
+print it to the standard output.