From Masq

+friends/<add/del> <player>
+friends/notify <ON|OFF>

+friends/note <player>=<note> +friends/notes

These commands show a +who-like list of your friends that are currently online. Friends may be added or deleted from the list. If you have a mutual friendship with a player and you have set notify to ON, you will be notified when they connect and disconnect from Masquerade. The final two commands allow you to add notes to your friends, to let you keep note of things like how you met someone, owing them a scene, et cetera, as well as viewing those notes.