Use
            the Circle object tool to draw a circle in one of two ways:
         
         
            - Centre-to-edge, with one vertex at the
               centre of the circle and a second on the circumference
            
- Edge-to-edge, with two vertices at opposite
               points on the circumference
            
To draw a circle from edge-to-edge:
         
         
            - In the Graphics menu, click Add.
            
- Select the Circle tool in the Object
               Tools window.
            
- Position the cursor at the centre of
               the circle and press to anchor that point on the image. Do not release
               the cursor.
            
- Drag the cursor to establish the radius
               of the circle. You can continue to adjust the size of the circle
               as long as you press down on the cursor.
            
- Release the cursor to anchor the second
               vertex.
               The circle is drawn on
                  the image.
                
To draw a circle from centre-to-edge:
         
         
            - In the Graphics menu, click Add and then
               select the Circle tool.
            
- Press and hold Alt.
            
- Drag the cursor to establish the radius
               of the circle.
               When the circle is the
                  required size, release the cursor.