-.TH RCVSTORE %manext1% "%nmhdate%" MH.6.8 [%nmhversion%]
+.TH RCVSTORE %manext1% "February 18, 2013" "%nmhversion%"
.\"
.\" %nmhwarning%
.\"
.B \-nopublic
switches may be used
to force these sequences to be public or private sequences.
+.SS LOCKING AND \-unseen
+If you use the \*(lqUnseen-Sequence\*(rq profile entry, rcvstore could
+try to read and update its sequence state while another
+.B nmh
+process is also trying to do so. This can cause the sequence state to
+lose track. To avoid this just between asynchronous invocations of
+.BR rcvstore ,
+do not use it without an external locking mechanism, for example, a
+.IR procmailrc (5)
+local lockfile, if you use the \*(lqUnseen-Sequence\*(rq profile
+entry.
.SH FILES
.fc ^ ~
.nf
.IR rcvdist (1),
.IR rcvpack (1),
.IR rcvtty (1),
-.IR mh\-sequence (5)
+.IR mh\-sequence (5),
+.IR procmailex (5),
+.IR procmailrc (5)
.SH DEFAULTS
.nf
.RB ` +folder "' defaults to \*(lqInbox\*(rq profile entry"