I was merely pointing out the fact that instead of splitting in documentation | greyzone | software the separation in documentation | rest is easier (just two classes) and might be good enough.
That's not really relevant, though. If you consider that the documentation in debian is not software (and I think you're mad if you do, FWIW), then you need to define a split:
software | rest so that we know what we must remove from debian. -- MJR/slef My Opinion Only and possibly not of any group I know.