Play formats I know of two commonly used formats, the American and the British. In both the American and British styles, you use a Courier 12-point font. In the American style, however, the character name is centred and in capital letters above the line of dialogue.
Dialogue is single- spaced and, unlike in screenwriting format, spans most of the page.
Leave healthy margins though. Stage directions . If they're short, they can just be incorporated into the side of dialogue itself. Character names are in caps in stage directions, too. But not, Dixie, when part of the dialogue itself.