Use the Clone tool to paint a copy of
            the result image to any position on the result image. The Clone
            tool can also be applied to an output matte image. For example,
            if the result image has a tree that you would like to copy to another
            position on the image, you can offset a copy of it to a different
            position and then paint it onto the result. 
         
         To paint a source onto
            the canvas, use the Reveal tool. See 
                     Revealing Sources. 
         
         To clone an image and
            include cloned data in the brush strokes, use the Recursive Clone
            tool. See 
                     Recursive Clone.
         
         NoteIf changes are made
               upstream of the Paint node, cloned strokes are preserved. However,
               the strokes will reflect the “old” input unless
               you force an update by clicking the Update button or by pressing U. Updates are not performed automatically because
               they can affect system performance.
            
         To clone an image:
         
         
            - Select Clone from the Paint Modes box
               (or press W).
               The Clone Offset parameters
                  appear.
                
- Set brush attributes. See 
                        Brush Attributes and Attribute Modes.
            
- To limit the cloned regions to the areas
               delimited by the matte, select an option in the Matte Source box.
            
- To transform the reference image, do
               one of the following:
               
                  - To manually offset the image, enable
                     the Overlay button (Tab),
                     then hold down Ctrl+Shift and drag the overlaid reference
                     image.
                  
- To scale the image, enter a value in
                     the Scale field.
                  
- To rotate the image, enter the angle
                     of rotation in the Rotate field.
                  
 NoteTo select an area
                     for cloning, Overlay must be turned off. If you offset an image,
                     verify that the Overlay button is disabled after use. 
                   
- To select the area you want to clone,
               press Ctrl and click
               the canvas.
               The cursor turns red
                  when you press Ctrl. When you
                  click the canvas, the red cursor is anchored and a green cursor
                  appears.
                
- Position the green cursor over the destination
               area and click the canvas.
               The green and red cursors
                  are now locked into positions relative to each other and move in
                  tandem.
                
- To set precise coordinates for the clone
               offset, use the X and Y fields.
            
- Click and drag on the canvas to clone
               to the destination area.