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wait
Prototypevoid wait(int period)
wait()
will cause the current script to pause at least period
milliseconds before continuing.
It is not uncommon to include a short wait after every say_stop() in a conversation, for example, to slow it down a little and make it more realistic.
As the engine only executes one script at a time, setting a period
of 1 millisecond will cause the script to 'yield the floor', allowing other scripts to execute, brains to think, and other actions to take place.