Better organization of spec by breaking 'Copying Content' into two sections, fetching and saving.
Fetching has requirements of both source and destination, but saving only has requirements on
destination, so this is clearer.
Also with better naming of other sections and some more clarity in explanations. No normative changes.
Addresses #28 -- still uses the word "copying" but more selectively, and with clarity when we're really talking about fetching and then deciding what to do.
@jernst
Better organization of spec by breaking 'Copying Content' into two sections, fetching and saving. Fetching has requirements of both source and destination, but saving only has requirements on destination, so this is clearer.
Also with better naming of other sections and some more clarity in explanations. No normative changes.
Addresses #28 -- still uses the word "copying" but more selectively, and with clarity when we're really talking about fetching and then deciding what to do. @jernst