How does auto-search prioritize?

I think my one-liners got it covered. I enjoy the auto-search feature of DC++ (which works fine), but the other day I was watching it's events in the system log and it stroke me that it doesn't go by alphabetic order when picking its items from queue, but in some other(?) manner. Or is it just - like us old QBasic kids used to refer to it - a randomize timer that selects an (any) item from the queue? In simple, is it all random? Or some other "order" that I havn't figured out, ie. datestamp of queue-adds, alphabetic order on TTH sums, etc etc..? Or like my first hypotheses - stated above - pure random shot?

I stated my question over at a client-specific forum and got an answer and pretty quick got the answer that he/she "thought it to be supposed to do random". However, since I'm a character of some compulsion disorders I just can't find it in me to relax comfy-domfy with that "he thought"-answer. So, I figured I'd give the real headquarter a shot for some answers.

A simple "It's all random!" (note the exclamation mark, leaving no room for "thoughts" :^) will most certainly fulfill my urge for De facto.

PS. I will presume that the answer I will be given will reach out also to the Strong~ family (StrongDC++, ApexDC++, AirDC++).

Great regards~
Carlos.