.RE
.PP
.BR Sequence\-Negation :
-not
+\&!
.RS 5
Defines the string which, when prefixed to a sequence name, negates
-that sequence. Hence, \*(lqnotseen\*(rq means all those messages that
-are not a member of the sequence \*(lqseen\*(rq. Read the
+that sequence. Hence, \*(lq!foo\*(rq means all those messages that
+are not a member of the sequence \*(lqfoo\*(rq.
+To deactivate this mechanism, define Sequence\-Negation to an empty value.
+Read the
.BR mh\-sequence (7)
-man page for the details. (profile, no default)
+man page for the details. (profile, default: !)
.RE
.PP
.BR Unseen\-Sequence :