Downsouth,
The droop is represented by a little circle on the aileron line and only appears when you have flap selected.
I have also wondered exactly what the squares at the end of the travel is for.....it is on the rudder too.
fantom is right, it is in 1.27.40 on page 10. The 2 lines represents aileron travel between 13 and 17 degrees. I assume the 13 degrees is the minimum acceptable travel. The ailerons may be biased in one direction for trim reasons, or whatever.
I would also be interested to hear if anyone can tell us the facts.......