Federelli: Heh.. it feels like that sometimes. Curse you big N!!
It's a code which interrupts the boot sequence of OoT and starts you off in hyrule field with no navi, icons, and you can't press start. The exit locations are scrambles (not random!) so certain ones take you to beta/unfinished/or areas meant for the DD OoT addon. It takes a bit of patience and quite a few code combinations, but when something new is found it's always worth it. Although I do believe I've mapped just about everything we can find in OoT as far as unused things go, sadly.
As for what it really is and what it was meant for, there are many theories.. too many to list in one post, so I'll just name a common one - It's part of the "Zelda Map Select" which is still in the Rom (the text "ZELDA MAP SELECT" is viewable from with a hex editor, as well as alot of DD related messages, such as "make sure the disk is inserted properly" hell, there's even a message about the expansion pack.. "make sure the expansion pak is plugged in correctly"), but we have not figured out a way to activate IT in itself.. the beta quest is thought to be a bypassed map select, taking you straight to hyrul field. Anyway, I've got ALOT more beta just sitting in my head, doing nothing.. but I don't really feel as if anyone cares, so I'll just let it stay there for now. :evil: