"/></p>


<p><b>Coordinate Systems, Colors and Symbols</b></p>

<p>In addition to the above there are state directives for color specification,
coordinate system and symbol reference size/shape). There can be multiple instance of each
overlay type and the state directives are "sticky".  For instance, if you set the color,
that color applies to all subsequent overlay directives on the command line until another
color is specified.  The coordinate system directive applies to all the overlays except "<tt>-grid