dditional obc nodelist

 EXAMPLE USAGE
    Mobj = add_obc_nodes(Mobj,'OpenOcean')

 Author(s):  
    Geoff Cowles (University of Massachusetts Dartmouth)

 Note:
    Uses ginput2 which allows zoom/pan before selecting points and displays
    clicked points realtime

 Revision history
   
==============================================================================</pre></div>

<!-- crossreference -->
<h2><a name="_cross"></a>CROSS-REFERENCE INFORMATION <a href="#_top"><img alt="^" border="0" src="../up.png