You
            can clear all strokes from the result image and output matte at
            the current frame or all frames. To limit the operation to a source, see 
                     Clearing Strokes on a Source.
         
         WarningAny strokes that
               have been applied will not be maintained when you clear strokes.
            
         To clear strokes from the canvas:
         
         
            - Select one of the following from the
               Clear Canvas option box:
               
                  - Clear to remove strokes from the current frame.
                  
- Clear All to remove strokes from all
                     frames.
                  
 The strokes are removed
                  from the result image.