1). How user defined flags (keywords) map to annotations? (Currently draft suggests to use "-" as prefix).
2). I had to extend the syntax for FETCH/SEARCH/STORE to allow to specify whether private or shared flag should be used for the conditional operation. This is a result of a change in one of the latest ANNOTATE revisions. The change removed default annotation type for STORE operation.
3). What entry-type-resp (i.e. "private" or "shared") should be used in unsolicited flag responses?
What about STORE/UID STORE on flags?