A green arrow is made by: C<--color ARROW#00FF00>
+[B<--border> I<width>]]
+
+Width in pixels for the 3d border drawn around the image. Default 2, 0
+disables the border. See C<SHADEA> and C<SHADEB> above for setting the border
+color.
+
[B<--zoom> I<factor>]
Zoom the graphics by the given amount. The factor must be E<gt> 0