1<documentation title="Duplicate Class Names">
2    <standard>
3    <![CDATA[
4    Class and Interface names should be unique in a project.  They should never be duplicated.
5    ]]>
6    </standard>
7    <code_comparison>
8        <code title="Valid: A unique class name.">
9        <![CDATA[
10class <em>Foo</em>
11{
12}
13        ]]>
14        </code>
15        <code title="Invalid: A class duplicated (including across multiple files).">
16        <![CDATA[
17class <em>Foo</em>
18{
19}
20
21class <em>Foo</em>
22{
23}
24        ]]>
25        </code>
26    </code_comparison>
27</documentation>
28