ferent on different devices.
</p>

<p>
  Each
  <a href="../../../guide/practices/ui_guidelines/activity_task_design.html#activities">activity</a>
  activity has its own set of operations and therefore its own Options menu.
  An application with multiple activities would have a different Options menu 
  for each activity. 
</p>

<p>
  For example, in the message list view of an email program, the Options menu
  might let you search the messages, compose a new message, refresh the list, 
  or change the emai