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<H1><A NAME="SECTION007200000000000000000"></A><A NAME="atoms"></A>
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5.2 Atoms
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<P>
Atoms are the most basic elements of expressions. The simplest atoms
are identifiers or literals. Forms enclosed in
reverse quotes or in parentheses, brackets or braces are also
categorized syntactically as atoms. The syntax for atoms is:
<P>
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<td><a id='tok-atom' xml:id='tok-atom'>atom</a></td>
<td>::=</td>
<td><a class='grammartoken' href="identifiers.html#tok-identifier">identifier</a> | <a class='grammartoken' href="atom-literals.html#tok-literal">literal</a> | <a class='grammartoken' href="atoms.html#tok-enclosure">enclosure</a></td></tr>
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<td>::=</td>
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<td><code>| <a class='grammartoken' href="genexpr.html#tok-generator_expression">generator_expression</a> | <a class='grammartoken' href="dict.html#tok-dict_display">dict_display</a></code></td></tr>
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<td><code>| <a class='grammartoken' href="string-conversions.html#tok-string_conversion">string_conversion</a></code></td></tr>
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<LI><A href="atom-identifiers.html">5.2.1 Identifiers (Names)</a>
<LI><A href="atom-literals.html">5.2.2 Literals</a>
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<span class="release-info">Release 2.4.3, documentation updated on 29 March 2006.</span>
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