Be Back Later. Be Right Back. Aside from what goes on normally over public channels, this is the standard abbreviation for the thief skill backstab. A mob who is under the control of a player character. Clans generally protect their members, group together quite a bit, and help each other out in verious ways.
Different clans have different requirements for membership.
No hard code exists to support clans on Apocalypse, but they survive nonetheless. A program which is used to make the arduous process of MUDing easier. Common clients include the ubiquitous TinTin and its derivatives, zMUD, TinyFugue, and others. Someone who is brand new and quite lost. When your natural con reaches 0, your kit will be dumped and you will become a level one character of whatever race and class you were originally, with new stats.