Also, respond to Seth's comment from commit 8cab8dae.

This was Seth's excellent advice.  The former is a term of art in
U.S. antitrust law, and using it could set off alarm bells for some
readers that we don't want to set off.

But not quite close enough yet to remove the "WIP" prefix from this
commit message nor the "DRAFT" watermark from the report.

By now you're probably wondering when this is going to end.  One
answer is that the sun will run out of hydrogen in approximately 5
billion years.  So there is, at least, an upper limit here.

See my other recent commit and you'll get the idea.

So much change; I recommend you not even bother with the diff.
This follows commit b5759c2a in both sequence and spirit.

This change, and others from me immediately following it, are part of
one long editing pass to get this report into final form (while Seth
is resolving any still-unresolved citations).  There's no point in
trying to write a detailed log message for each commit, since the
commits are just checkpoints anyway; the best way to know what
happened is to just look at the diff.

It's a subtle difference, but an important one: "past" implies that
those practices are no longer used, whereas "historical" merely means
that they have historically been used (while not implying, or at least
not implying nearly so strongly, that they are no longer used today).

Many changes across the entire document, commenting out some material
and editing other material, in order to make an internal draft version
for sharing with OSI.