Playback. You can graph tensions, echoes, and spare values. See
your field notes at each tension. Notice the bottom graph's green pointer. You can move this pointer to any of the
recorded tensions.
The top graph visually shows you how much the echo was delayed at this green
pointer's tension value. Any field notes (or lab notes) you entered at this tension are shown below the
bottom graph.
You can see every recorded tension on the bottom graph.
To see the notes, tensions, bolt temperature, spare parameters, ... etc.,
every time the user pressed the "Record" button, move this Green Pointer (left or right).