href="r5rs-6.html#Disjointness-of-types">Disjointness of types</a></td></tr>
 <tr><td></td><td valign="top" align="left">3.3</td><td colspan="3" width="100%"><a href="r5rs-6.html#External-representations">External representations</a></td></tr>
 <tr><td></td><td valign="top" align="left">3.4</td><td colspan="3" width="100%"><a href="r5rs-6.html#Storage-model">Storage model</a></td></tr>
 <tr><td></td><td valign="top" align="left">3.5</td><td colspan="3" width="100%"><a href="r5rs-6.html#Proper-tail-recursion