.PS
[
   line dashed                    \
      right 1 then down .5 left 1 then right 1
   spline from start of last line \
      right 1 then down .5 left 1 then right 1
   ]
  move right 0.25 from last [].se
  arrow right 1 "ljust above" ljust above
  move right 0.5
  spline right then up then left then down ->
  move right 1.1
  spline right then up left then down ->
  move right 1.5
  spline left then up right then down right ->
.PE
