<p>In your wireframes, <a href="{@docRoot}guide/topics/ui/accessibility/apps.html#label-ui">label functional UI components</a> that have no visible text. Those components might be buttons, icons, tabs with icons, and icons with state (like stars). Developers can use the <code><a href="{@docRoot}guide/topics/ui/accessibility/apps.html#label-ui">contentDescription</a></code> attribute to set the label.</p>
<em>when starred:</em> remove from favorites </br>
<em>when not starred:</em> add to favorties</li>
<li class="value-7">action overflow button</li>
<li class="value-8">text message</li>
<li class="value-9">video chat</li>
</ol>
</div>
</div>
<h4>Provide alternatives to affordances that time out</h4>
<p>Your app may have icons or controls that disappear after a certain amount of time. For example, five seconds after starting a video, playback controls may fade from the screen.</p>