What is the meaning of "cross down"?

While translating a text I came across the expression: "cross down". The whole line (It's a play) is: "Beautiful. Cross down." And expresses kind of approval. Do you know the phrase? does it come from sporsts? Like "one point" or something alike? I cannot find it on the net.

This appears to be from Venus in Fur, by David Ives. The character speaking, Vanda, is directing her fellow-actor Thomas. Beautiful is a comment on his delivery of the preceding line; cross down in theatrical jargon is a direction to move ("cross") downstage = toward the audience.

Similarly, up would mean upstage = away from the audience, and right and left would mean stage right/stage left = to the right or left side of the stage from the actor's perspective.