Throw-in at start of quarter

[jeffpea]

Here's a simple question that I've never bothered to look up and have never been clear on the answer:

When administering a throw-in to start a quarter (at division line opposite the table), does the player stand OOB in his/her frontcourt or backcourt? What is the reason - other than "that's what the book says"?

I've administered it both ways (without problems) and would prefer not to screw up a simple task like this....