title: Max key/value length in 'application configuration' files
body: <p>What's the maximum allowed length for <code>MyKey</code> and <code>MyValue</code> in a configuration file?</p>
  
  <pre><code>&lt;configuration&gt;
    &lt;appSettings&gt;
      &lt;add key="MyKey" value="MyValue" /&gt;
    &lt;/appSettings&gt;
  &lt;/configuration&gt;
  </code></pre>