Since Alan's already seriously answered your question, I don't feel bad posting this.

Reference Levels by job title:
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Director : The soliloquay I'd like to be really "present"... kind of "coeval", you know! Idiots!

Audio Engineer : (incomprehensible jargon)

Audio Tech : I don't care long as the IOC doesn't flash

Lighting tech : Stop that ****, my HMIs are vibrating!

First camera : Dee-Bee?!?

Bren R.