Conventions in depth
A cue-bid of the opponent’s opening suit that shows a two-suited hand of at least five-five.
The player holds at least five-five in two suits and roughly 8 or more points (about 10 when vulnerable), with no upper limit. The cue-bid can be made directly or in the balancing seat, and the two suits depend on what was opened:
Advancer chooses the contract, normally in one of partner’s two suits rather than advancer’s own suit. The strength is found out on the next round.
The cue then belongs to your side. Partner has opened, the next hand has shown two suits, and you hold support:
Over a weak-two opening such as 2♠, a bid of 3♠ is not Michaels. There is no room left for a two-suiter, so BidMaestro reads it as a Western cue-bid asking partner to bid notrump with a stopper. Michaels is a tool for cue-bidding a one-level opening.