chromium/chrome/browser/resources/chromeos/accessibility/chromevox/learn_mode/learn_mode.html

<!DOCTYPE HTML>
<!--
Copyright 2014 The Chromium Authors
Use of this source code is governed by a BSD-style license that can be
found in the LICENSE file.
-->
<html>
<head>
<title class="i18n" msg="kbexplorer_title">ChromeVox Learn Mode</title>
<style type="text/css">
h2 {
  font-family: arial;
}
</style>

<script type="text/javascript" src="../chromeVoxKbExplorerScript.js"></script>
<script type="module" src="learn_mode.js"></script>
</head>
<body>
  <h2 class="i18n" msgid="kbexplorer_title">ChromeVox Learn Mode</h2>
  <p id="instruction" aria-live="polite">
    Press any key to learn its name. Ctrl + W will close learn mode.
  </p>
</body>
</html>