 <tr><td valign="top" align="left">2</td><td colspan="4" width="100%"><a href="r5rs-5.html#Lexical-conventions">Lexical conventions</a></td></tr>
 <tr><td></td><td valign="top" align="left">2.1</td><td colspan="3" width="100%"><a href="r5rs-5.html#Identifiers">Identifiers</a></td></tr>
 <tr><td></td><td valign="top" align="left">2.2</td><td colspan="3" width="100%"><a href="r5rs-5.html#Whitespace-and-comments">Whitespace and comments</a></td></tr>
 <tr><td></td><td valign="top" align="left">2.3</td><td cols