A message sequence is a keyword, just like one of the \*(lqreserved\*(rq
message names, such as \*(lqfirst\*(rq or \*(lqnext\*(rq. Unlike the
\*(lqreserved\*(rq message names, which have a fixed semantics on
a per\-folder basis, the semantics of a message sequence may be
defined, modified, and removed by the user. Message sequences are
folder\-specific, e.g., the sequence name \*(lqseen\*(rq in the context
A message sequence is a keyword, just like one of the \*(lqreserved\*(rq
message names, such as \*(lqfirst\*(rq or \*(lqnext\*(rq. Unlike the
\*(lqreserved\*(rq message names, which have a fixed semantics on
a per\-folder basis, the semantics of a message sequence may be
defined, modified, and removed by the user. Message sequences are
folder\-specific, e.g., the sequence name \*(lqseen\*(rq in the context