.  The user might 
   power down the device, the device might run low on power, or the device 
   might run low on memory while the viewer application is in the background 
   and decide to shut down the viewer application.</P>

<P>Under these circumstances, the VILFile library should save the 
   information needed to restore the document display UI state.
   As shown below, there is likely to be more state information than 
   there was information in the document itself.  The state information 
   will a