Enhancing Images > Using the Tool Box Toolbar > Using the Painting Tools
Use the Copy Rectangle tool to copy a rectangular area and move it to a different area of an image.
To use this tool:
Click .
Position the cursor over the image and click and drag diagonally to draw a rectangle.
Position the cursor in the middle of the rectangle and click and drag the rectangle to a new position.
Click outside the rectangle. The change to the image is now permanent.