-.TH MH-SEQUENCE %manext5% "January 9, 2001" "%nmhversion%"
+.TH MH-SEQUENCE %manext5% "June 11, 2013" "%nmhversion%"
.\"
.\" %nmhwarning%
.\"
.PP
The word `msgs' indicates that one or more messages may be specified.
Such a specification consists of one message designation or of several
-message designations separated by spaces. A message designation consists
+message designations, as separate arguments. A message designation consists
either of a message name as defined above, or a message range.
.PP
A message range is specified as \*(lqname1\-name2\*(rq or
should be defined in the
.B nmh
profile; its value should be a sequence
-name or multiple sequence names separated by spaces. If this entry
+name or multiple sequence names, as separate arguments. If this entry
is defined, when when an
.B nmh
command finishes, it will define the
in the
.I \&.mh\(ruprofile
should be defined as one or more sequence
-names separated by spaces. If there is a value for
+names, as separate arguments. If there is a value for
\*(lqUnseen\-Sequence\*(rq in the profile, then whenever new messages
are placed in a folder (using
.B inc
displays a message, that message will be removed from
any sequences named by the \*(lqUnseen\-Sequence\*(rq entry in the
profile.
+.SS Sequence File Format
+The sequence file format is based on the RFC\-5322 message format. Each line
+of the sequence file corresponds to one sequence. The line starts with the
+sequence name followed by a `:', then followed by a space-separated list of message numbers
+that correspond to messages that are part of the named sequence. A contiguous
+range of messages can be represented as \*(lqlownum\-highnum\*(rq.
+.PP
+.B Sample sequence file
+.PP
+.RS 5
+.nf
+work: 3 6 8 22-33 46
+unseen: 47 49-51 54
+cur: 46
+.fi
+.RE
+.PP
+.B Nmh
+commands that modify the sequence file will silently remove sequences for
+nonexistant messages when the sequence file is updated. The exception to
+this is the \*(lqcur\*(rq sequence, which is allowed to point to a
+nonexistant message.
.SS Sequence File Locking
The \*(lqdatalocking\*(rq profile entry controls the type of locking used
when reading and writing sequence files. The locking mechanisms supported
.SH FILES
.fc ^ ~
.nf
-.ta \w'%etcdir%/ExtraBigFileName 'u
+.ta \w'%nmhetcdir%/ExtraBigFileName 'u
^$HOME/\&.mh\(ruprofile~^The user profile
^<mh\-dir>/context~^The user context
^<folder>/\&.mh\(rusequences~^File for public sequences