-.PP
-Sometimes you want
-.B sendfiles
-to pause after posting a partial
-message. This is usually the case when you are running
-.B sendmail
-and expect to generate a lot of partial messages. If the first
-argument given to
-.B sendfiles
-starts with a dash, then it is
-interpreted as the number of seconds to pause in between postings,
-e.g.,
-.PP
-.RS 5
-sendfiles -30 recipient \*(lqsubject\*(rq files\0...
-.RE
-.PP
-will pause 30 seconds in between each posting.