After
            you choose a colour model and set the average colour, adjust the
            softness range. The softness at the edges of the matte increases
            as you increase the softness range. To set the softness, you can
            use the colour picker, the numeric fields, or the Master Softness
            field.
         
         To set the softness using the colour
            picker:
         
         
            - Zoom in to see the edges of the matte
               more clearly.
            
- Click Softness in the selected colour
               model menu.
               The cursor changes to
                  a colour picker.
                
- Position the colour picker at the edge
               of the matte. To increase the softness, click and slowly drag the
               colour picker toward the centre of the matte. The values within
               the area you selected are used to adjust the maximum and minimum
               values for the softness range. The positions of the yellow lines
               change as you drag the cursor on the image.
            
- To increase or decrease the softness
               range, click the + or - button beside the Softness button and then
               click an area of the image.
            
To set the softness range using the numeric fields:
         
         
            - Set the minimum value for the softness
               range using the Minimum Softness field on the left side of the colour
               bar.
            
- Set the maximum value for the softness
               range using the Maximum Softness field on the right side of the
               colour bar.
            
To set the softness range using the Master
            Softness field:
         
         
            - Set a value in the Master Softness field.
               The value is added to
                  the existing softness value of each channel. The Master Softness
                  field is reset to zero after you set the value.