How is a "out for stepping out of box while hitting ball" in the score book.
I don't see that, do you have a reference? Happened in a game and was asked how to score and my best guess unassisted F2.
9-5-2 Ex1. "Catcher is credited with the putout when batter is out for illegally batting the ball, ..." (also bunt foul on 3rd strike, being hit with your own batted ball in fair territory, batting out of turn, or batters interference).