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This tab contains settings which apply to the whole composition.
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Document Timing: Used to define the duration of a composition. There is also a list which can be used to add/remove/modify stop frames.
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Background
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: Used to define the background of a composition. The background will not be visible in the final playout in just:play/just:live. The poster frame (i.e. static preview image of the composition) can either be automatically generated (default) or manually.
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Overlays: Used to show/hide the safe areas which will not be visible in the final playout in just:play/just:live. There is also a list which can be used to add/remove/modify user-created guides.