It's a blueprint.

The hero's a young hoofer in a Broadway… Nothing happened. I can explain everything. I really should give you another chance. But I think you ought to marry me. Just call me Stanley. Why not? Here, give me that chair. What are you looking so happy about? That's him, the one with the pretty girl… You're late, kid. I made him stop the car and I jumped out… We throw a modern section into the pictu… A blueprint for the future, a blueprint… I've never thought of myself as one part…