NOTRUMP OPENING BIDS:
For the minor suit transfers, completing the transfer shows honor-third or any four.

MAJOR OPENING:
X of an enemy splinter is lead-directing for the suit under the doubled suit

2 LEVEL BIDS:
After, 2[D/H/S]-X, 2NT is still ogust, but all other bids are transfers.  The transfer may be purely lead-directing, or it may be to play.  XX is a transfer to the next higher suit.  A direct raise denies the ace or king of the suit.

GENERAL:
After a two-suited bid is doubled, pass is an offer to play in the doubled contract and XX requests a rescue.