2.3.2 Unsecured Exits

An exit that is not linked to anything and not thoroughly locked is unsecure, in that its ownership transfers to anyone who uses the exit and anyone can link it. This creates a security risk: someone could take control of an exit attached to one of your rooms and make it do something annoying or harmful. So, always secure exits. An exit can be secured by locking it to a condition that always fails — such as me&!me — or by linking it to something. All established MUCKs provide a `do-nothing' program, a program that produces no result, and thus serves as a convenient linking point for exits. Usually such a program is given the registered name $nothing or $do-nothing.

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> @link sit = $nothing
  Linked to gen-nothing.muf(#363FLM2).
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