Revised wording, punctuation, clarity

I thoroughly reviewed everything, made statements more active, reduced extraneous wordings, and overall improved readability and clarity. No changes affect the meaning of the definitions.
This is the only change I'm not sure doesn't change meaning. I'm not sure what the reworded meaning is. The condition can't be onerous. The imposition (a word that I'm not thrilled about to describe conditional permission) such as it is, will be onerous (relying on copyright or nearby :)).