class="comment"> num_available --- number of free slots in the graph system</pre></div>

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<h2><a name="_cross"></a>CROSS-REFERENCE INFORMATION <a href="#_top"><img alt="^" border="0" src="../up.png"></a></h2>
This function calls:
<ul style="list-style-image:url(../matlabicon.gif)">
<li><a href="graph_system_exists.html" class="code" title="function tf = graph_system_exists">graph_system_exists</a>	graph_system_exists checks to see if the GRAPH_MAGIC global structure has</li></ul>
This