ay, yielding a sharper
shadow.  <i>blur_size</i> is the number of pixels of fringe there is
on the shadow, beyond where the shadow would be if there were no
blurring.

<p>The default is 11 pixels.

<p>Note that this option controls only the fringing effect of moving
the light source closer to the object.  It does not make the shadow
grow or shrink as would happpen in the real world if you moved a point
light source closer to and further from an object.

<DT><B>-k</B>
<DD>
Keep the intermediate temporary ima