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Playhead - The long vertical aqua colored line with a triangle on top that shows the user where in the timeline their project is. This can be left clicked and dragged to go back and forth in time.
Reference - one part of the process is dependent on the previous part. When you create a set, the Scene Blocking is referenced to that set. Any changes that are made to that set are shown in the Scene Blocking and any related shots.
Scenes - A group of shots based on script location. Usually defined by the script as Scene Heading. Shots makeup a Scene. Scenes make up a Project. Also known as Sequences. Can be labeled as numeric (10,20,30) or alphabetical (A,B,C)
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