those sequences and messages.
.PP
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
those sequences and messages.
.PP
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