title: Is XML case-sensitive?
body: <p><strong>Short question</strong></p>
  <p>Is XML case-sensitive?</p>
  <p><strong>Longer question</strong></p>
  <p>For example:</p>
  <pre><code>&lt;Shirt color=&quot;Red&quot;/&gt;
  </code></pre>
  <p>The attribute color is of type <code>string</code> that may contain a set of valid colors (<code>Red</code>, <code>Blue</code> and <code>Green</code>).</p>
  <p>To validate the XML, I used the following XSD:</p>
  <pre><code>  &lt;xs:simpleType name=&quot;ColorType&quot;&gt;
      &lt;xs:restriction base=&quot;xs:string&quot;&gt;
        &lt;xs:enumeration value=&quot;Red&quot;/&gt;
        &lt;xs:enumeration value=&quot;Blue&quot;/&gt;
        &lt;xs:enumeration value=&quot;Green&quot;/&gt;
      &lt;/xs:restriction&gt;
    &lt;/xs:simpleType&gt;
  </code></pre>
  <p>Am I <em>expected</em> to accept different case variations of Red, Blue and Green? Or XML is widely accepted as case-sensitive?</p>