Michael J Gruber [off-list ref] writes:
As a general guideline, a reader should be able to understand the
response without looking up the post you are responding to (but may have
A reader should be able to remember which original the response is about,
so that s/he can look it up if s/he doesn't. If in doubt, I'd rather see
people discard irrelevent bits more not less.
And don't cull cc, don't break the thread. (You haven don't that here, I
do appreciate that, thanks!).
That is true.