-.TH SORTM %manext1% "October 11, 2012" "%nmhversion%"
+.TH SORTM %manext1% "March 23, 2014" "%nmhversion%"
.\"
.\" %nmhwarning%
.\"
.B \-check
switch,
.B sortm
-inhibits all modifications to the folder if there any such messages,
-and exits with non-zero status. With the default of
+inhibits all modifications to the folder if there are any such
+messages, and exits with non-zero status. With the default of
.BR \-nocheck ,
.B sortm
sorts messages with a missing or invalid
\*(lqDate:\*(rq field using their file modification times.
+.PP
+When ordering messages based on their dates, if they have the same
+dates, their original message order is preserved.
.SH FILES
.fc ^ ~
.nf