Discussion: Auction Purchase "crm" value

Can anyone tell me what the "crm" value on the auction purchase form actually is? (see i.imgur.com/bBYzL.png) I imagine that perhaps I should just know this or recognize the encoding...but I don't.  : ( Any guidance (or guesswork!) would be appreciated.
Looks like an identifier for something. Maybe for that specific record or maybe a nonce for when multiple people try to buy it.

It doesn't look very important, so you don't really need it.