Marks the end of an undo group begun with the app.beginUndoGroup method. You can use this method to place an end to an undo group in the middle of a script,
Category Archives: Application object
activeViewer
The Viewer object for the currently focused or active-focused viewer Composition, Layer, or Footage panel.Returns null if no viewers are open.Viewer object;
Application object
Provides access to objects and application settings within the After Effects application. The single global object is always available by its name, app.Attr