Ogust is a conventional 2NT response to a weak two bid that tries to gauge the strength of the preemptor's hand. It usually (but not always) guarantees trump support. After the Ogust 2NT response, the preemptor's conventional rebids are:

3	Bad hand, one of the top three honors in the preempt suit
3	Bad hand, two of the top three honors
3	Good hand, one of the top three honors
3	Good hand, two of the top three honors
3NT	Good hand, three of the top three honors

Rebids by the Ogust bidder are natural.

If Ogust is doubled, the conventional responses are on; after an overcall, they are off. The preemptor can double for penalties, pass with a bad hand, or rebid his suit if it is worth it.