Catchup
From MUME
Syntax: catchup [<number>|<name>]
This command is used to mark all messages on a bulletin board up to the number given as read. It can only be used in a room with a bulletin board (but see also news).
Mark all messages on a bulletin board up to <number>, or all messages written by <name>, as read. If you do not specify a parameter, all the messages are marked as read. If <number> is negative, mark all messages except the last <-number> messages as read.
Example:
> catchup 14201
