xt short.  In some versions of Android,
  when the icon is highlighted by a navigation key (such as a trackball), the
  entire descriptive text may be shown as a marquee, where the words are
  readable as they scroll by.  <!--For more information, see the Text Guidelines
  [update link].-->
</p>

<h3 id="a_dialog_should_not_have_an_options_menu">A dialog should not have an Options menu</h3>

<p>
  When a dialog is displayed, pressing the <em>Menu</em> button should do nothing.  This also holds
true
  for ac