 It was initially a very light structure or just cloth hanging from a rope, but over the course of time the "skene" underwent fundamental changes.First, it became a permanent building, whose roof could sometimes be used to make speeches, and as time passed it was raised up from the level of the orchestra, creating a "proskenion", or "space in front of the "skene"".The facade of the "proskenion" was behind the orchestra and provided a space for supporting stage scenery.