More recently, Hollywood filmmakers use the term pre-visualization (also known as pre-vis, pre vis, pre viz, pre-viz, previs, or animatics) to describe a technique in which digital technology aids the planning and efficiency of shot creation during the filmmaking process. It involves using computer graphics (even 3D) to create rough versions of the more complex (visual effects or stunts) shots in a movie sequence. The rough graphics might be edited together along with temporary music and even dialogue. Some pre-viz can look like simple grey shapes representing the characters or elements in a scene, while other pre-vis can be sophisticated enough to look like a modern video game.