I'd like to tag or else mark a subtree as on the "backburner" and exclude the subtree (and its children) from all agenda views, e.g. agenda, to do, match list, etc.
Basically this would replicate the functionality of the
:ARCHIVE: tag, except I already use that tag for archiving, and it appears that
org-archive-tag does not accept multiple strings.
I've also tried the following:
#+TODO: TODO | DONE #+TODO: WAIT BURN | CANC
This allows me to exclude a single subtree, but not its children, so it's not particularly useful for sending a whole project to the backburner.
Any ideas or alternate workflows I might try for putting projects on the backburner?