[pypy-dev] source code documentation in PyPy

Hi I would like to suggest we add a requirement to document PyPy source code slightly better. Step one would be to have few-sentences "where are you now" info at the top of each file. How about we try to stick to a policy where each time anyone does a major work on a file, he adds documentation to the top or checks if what's there is already correct? Opinions? Cheers, fijal