MoveClipActionObjectAddTrackActionObjectMoveClipActionObjectPropertiesclipcreateTracksinsertIndexredoFrameredoSelectiontrackIndextypeundoFrameundoInsertIndexundoSelectionundoTrackIndexclipclip: ClipcreateTrackscreateTracks: numberinsertIndexinsertIndex: numberredoFrameredoFrame?: numberredoSelectionredoSelection: EditorSelectionObjecttrackIndextrackIndex: numbertypetype: ActionTypeundoFrameundoFrame?: numberundoInsertIndexundoInsertIndex: numberundoSelectionundoSelection: EditorSelectionObjectundoTrackIndexundoTrackIndex: number