Also add a note explaining the somewhat low limit.
(Note: mmh's value is different to nmh's.)
Pulled in from nmh. Thanks to Ken Hornstein.
.PP
.IP \(bu 2
Only a certain number of sequences may be defined for a given folder.
-This number is usually limited to 26 (10 on small systems).
+This number is usually limited to 29 (13 on small systems). (The
++internal implementation relies on bitmasks, with some bits set aside
++for internal use.)
.PP
.IP \(bu 2
Message ranges with user\-defined sequence names are restricted to the