There are two betting rounds, one before the draw and one after the draw. The game is played with a button and an ante. Players in turn may check, open for the minimum, or open with a raise. After the first betting round the players have the opportunity to draw new cards to replace the ones they discard. Action after the draw starts with the opener, or next player proceeding clockwise if the opener has folded. The betting limit after the draw is twice the amount of the betting limit before the draw. Some draw high games allow a player to open on anything; others require the opener to have a pair of jacks or better.
Roberts Rules of Poker