.       # Do not change the first portion
    60*1,+  # Rotate 60 degrees away from the current
            #  heading, for a distance equal to 1 times
            #  the length of the current portion of the
            #  line segment.  (The '*1' can be omitted,
            #  without changing the effect).  Then,
            #  draw a final line completing the trip
            #  to the next point beginning the next
            #  portion of the line segment.
    .       # Do not change the last portion