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<h4 class="subsection">10.4.2 Internal structure</h4>
<p><code>DECL</code> nodes are represented internally as a hierarchy of
structures.
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<li><a accesskey="1" href="Current-structure-hierarchy.html#Current-structure-hierarchy">Current structure hierarchy</a>: The current DECL node structure
hierarchy.
<li><a accesskey="2" href="Adding-new-DECL-node-types.html#Adding-new-DECL-node-types">Adding new DECL node types</a>: How to add a new DECL node to a
frontend.
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