TODO: complete this section, or delete if not needed
</p>
+<h3 id="cgo">Cgo</h3>
+
+<p><!-- CL 497837 --> The special comment that precedes
+ <code>import</code> <code>"C"</code> may now include two
+ new <code>#cgo</code> directives.
+ <ul>
+ <li>
+ <code>#cgo</code> <code>noescape</code> <code>cFunctionName</code>
+ tells cgo that Go pointers passed to the C function
+ <code>cFunctionName</code> do not escape.
+ </li>
+ <li>
+ <code>#cgo</code> <code>nocallback</code> <code>cFunctionName</code>
+ tells cgo that the C function <code>cFunctionName</code> does
+ not call any Go functions.
+ </li>
+ </ul>
+ See <a href="/cmd/cgo#hdr-Optimizing_calls_of_C_code">the <code>cgo</code>
+ documentation</a> for more details.
+</p>
+
<h2 id="runtime">Runtime</h2>
<p>