CROW is an acronym of:
It is a mnemonic for the things that should be defined within a scene. In other words, there are the five W questions to be answered:
Who? (=Type/Figure) What is the established figure, what do they stand for in the scene?
With whom? (=Relation) What relationships do the other characters have to the main figure?
Where? and when? (=place/time) Where does the whole scene take place? In the present, in the past, or in the future?
What? What? What goes one in the scene?
These points are essential for the scene. Each player should work towards establishing this.