An Interesting thing.

[YinYin]

lots of files were included in the exe in early versions (sounds/graphics - perhaps also data)
i wouldn be surprised if they just left the calling sequence in there in case they put things back into it

and there has to be another data\data.txt reference if this runs without it - cause ive effectivley changed that once (unless the exe automatically reverts to using deep_chop.dat in case this location cannot be found - i doubt it tho)