Thanks for your comments. Here's my replies:
#14. Correct. You must request a reply. Most people just say "time warning". (I'll plan to add this phrase to the rules).
#15. I agree this is vague. McGoohan also asked the same question. I think we should allow vacation to be announced after a warning, but before a move is made. I'll make that clear unless anyone has a clear reason to not allow it.
#16. Yes, a time warning can be issued anytime after the time-control is exceeded. A game can sit for any number of days with no problem if a warning is not issued. The opponent is not under the 24-hour warning until the thread is bumped and "time warning" announced.
#17. Note the rule says "If a board has not been posted which is at most 1-ply from the current position, and a player requests to see a board, time waiting for the board does not count as playing time." This means that a time warning can be negated if the board within 1-ply from the current position has not been posted. The current practice of announcing "WFB" (wait for board) seems to be fine to me.
Let me know if anything might still be unclear, or sounds ambiguous.
(for items where I plan to do an update I will plan to do it be mid-September. I usually allow time for others to comment before any text is revised.)
All right.