Use
            the Circle option to draw circles of any size.
         
         To paint a circle:
         
         
            - Click Geometry to display the Geometry
               menu.
            
- Select Circle from the Geometry box.
            
- Press the cursor on the canvas to anchor
               the centre point of the circle. Drag the cursor to size the circle.
            
- When the circle is the required size,
               release the cursor.
               A circular brush stroke
                  is painted.