sorry for posting such ambiguous message!
i thought Andrea/Maurizio might (;) understand the (poorly worded) question because of previous communication.
nonetheless, this is about the shell extension (pop-up) tagging interface.
What i was trying to describe was the ability to cache the tabble list particularly for initial tagging (tabbling).
Thus, I expect the Tabble list wouldn’t necessarily be ‘complete’ at all times, except when after a tabble was ‘created’, ‘deleted’, or ‘re-ordered'(change hierarchy), in the main interface.
I don’t know how much memory this list would require, and it would ‘lazy-update’ whenever resources were available. The cache would be called when the ‘quick-tag’ was invoked.
btw, caches seem in place at ‘recent tags’ in the pop-up tag interface “Tag” pulldown.

ciao