SYNC -- Synchronizes loops running in multiple briefing windows
   SYNC syncfile
Parameters:
   syncfile | file containing the synchronization configuration
Remarks:
   Use SYNC to create briefing windows and display synchronized frame
   loops. Because SYNC creates up to 9 briefing windows (beginning with
   briefing window 0), you should close any existing briefing windows
   before running the command.  If any briefing windows are present,
   duplicate windows may be created causing synchronization or other
   conflicts.

   To run SYNC, you must first create a text file containing the
   synchronization configuration. The first line defines the dwell rate
   for each frame. The second line defines the frame sequence for briefing
   window 0, the third line defines the frame sequence for briefing window
   1, etc.  A maximum of nine briefing windows (0-8) is allowed.

   The sample file shown below sets up two briefing windows, 0 and 1.
   Window 0 displays frames 1-4. Window 1 displays frames 5-8. The first
   frame is assigned a dwell rate of 4, and the last three frames are
   assigned a dwell rate of 1 (as fast as possible).
         4 1 1 1
         1 2 3 4
         5 6 7 8

   If you want briefing window 1 to loop at half the speed of window 0,
   you could create a file like the one below. Frames 1-4 (in window 0)
   will loop twice as fast as frames 5-8 (in window 1).
         1 1 1 1 1 1 1 1
         1 2 3 4 1 2 3 4
         5 5 6 6 7 7 8 8

   If you run out of memory attempting to run SYNC, try making your frames
   smaller, or use fewer briefing windows. If your McIDAS-X briefing
   windows appear with private colormaps, they may not display the frames
   with the correct colors when they are looping. If this happens, restart
   your McIDAS-X session with fewer image and graphics colors.
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