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Sets a callback for msg on channel from name and id.
Returns an integer that can be used to deactivate or remove the listen.
|• integer||channel||–||any valid integer, positive or negative.|
If msg, name or id are blank there are not used to filter incoming messages.
If id is an invalid key or a null key, it is considered blank.
Lag tip: Avoid channel 0 and set name or id where possible. llListen(0,"",NULL_KEY,"") is extremely laggy and should be avoided at all cost.
|DEBUG_CHANNEL||Chat channel reserved for script debugging and error messages, broadcasts to all nearby users.|
|PUBLIC_CHANNEL||Chat channel that broadcasts to all nearby users. This channel is sometimes referred to as: open chat, local chat and public chat.|
function integer llListen( integer channel, string name, key id, string msg );