@GAG, @UNGAG, @IGNORE, @UNIGNORE

@gag <player>

@ignore <player>

@ungag <player>

@unignore <player>

@ignore and @gag are synonymous, as are @unignore and @ungag. Both maintain the same list. Without options, @gag lists the players you are gagging. Othwerise the specified player will be added or removed from your gag list. Any commands from a player on your gag list will not be shown to you.

There are hooks in muf and MPI to support gagging properly in them (ie. keeping gagged players from spamming mail.)