Maik JUSTUS: (OK'ed by Andy)

Maik JUSTUS:     (OK'ed by Andy)

"""
- ground properties (e.g. feel bumpiness and the reduced friction of
  grass or go swimming with the beaver)
- initial load for yasim gears (to get rid of the jitter the beaver has
  on ground)
- glider/winch/aerotow (do winch start with YASim glider or do aerotow
  over the net) I will place a how-to on the wiki soon, here very short:
  use the sgs233y (or the bocian if you have AJ (up ot now) non-GPL
  bocian)
  winch start: Ctrl-w for placing the winch, hold w to winch, press
               Shift-w to release the tow
  aerotow: Place the glider within 60m to a MP-aircraft, press
           Ctrl-t to tow to this aircraft. If the MP-aircraft is the
           J3 and the patch is installed on both sides, the J3 feels the
           forces, too. The J3-pilot has to taxi very slow up to the
           moment, the glider starts moving. Increase the throttle gently.
           Don't lift the J3 early, wait for the glider being lifted,
           lift gently.
"""