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<h2 class="chapter">11 Implementation Details</h2>

<p>Here we document details of how the preprocessor's implementation
affects its user-visible behavior.  You should try to avoid undue
reliance on behavior described here, as it is possible that it will
change subtly in future implementations.

   <p>Also documented here are obsolete features and changes from previous
versions of CPP.

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<li><a accesskey="1" href="Implementation_002ddefined-behavior.html#Implementation_002ddefined-behavior">Implementation-defined behavior</a>
<li><a accesskey="2" href="Implementation-limits.html#Implementation-limits">Implementation limits</a>
<li><a accesskey="3" href="Obsolete-Features.html#Obsolete-Features">Obsolete Features</a>
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