Glossary of Theatre Terms

There are detail descriptions of some terms in the glossary available in this portion of the FAQ.

Look here for an alphabetical list of all theatre terms in the glossary 

bio box

I have been pondoring this question for a while now and have yet to come across a person who can actually tell me the real answer. Where did the term 'bio' as in bio box come from. We all know what it is but what does it mean?

Chookas!

I was at work last night (we had our first preview) and everyone was running around with the normal ritual of saying "chookas".

It suddenly occurred to me, where on earth did this saying come from? We all have theories on "Break a leg" but I've never heard one for "chookas".

Any guesses?

By the way, has anyone heard anyone use "Break a leg" lately? All I've heard for the last few years is "chookas"...