docs: def write_task_point(self, latitude=None, longitude=None, text='',
                           distance_min=None, distance_max=None,
                           bearing1=None, bearing2=None):
          """
          Write a task declaration point::
  
              writer.write_task_point(
                  latitude=(51 + 7.345 / 60.),
                  longitude=(6 + 24.765 / 60.),
                  text='Meiersberg',
              )
              # -> C5107345N00624765EMeiersberg
  
          If no ``latitude`` or ``longitude`` is passed, the fields will be
          filled with zeros (i.e. unknown coordinates). This however should only
          be used for ``TAKEOFF``  and ``LANDING`` points.
  
          For area tasks there are some additional parameters that can be used
          to specify the relevant areas::
  
              writer.write_task_point(
                  -(12 + 32.112 / 60.),
                  -(178 + .001 / 60.),
                  'TURN AREA',
                  distance_min=12.0,
                  distance_max=32.0,
                  bearing1=122.0,
                  bearing2=182.0,
              )
              # -> C1232112S17800001W00120000032000122000182000TURN AREA
  
          :param latitude: latitude of the point (between -90 and 90 degrees)
          :param longitude: longitude of the point (between -180 and 180 degrees)
          :param text: type and/or name of the waypoint (e.g. ``TAKEOFF``,
              ``START``, ``TURN 1``, ``TURN 2``, ``FINISH`` or ``LANDING``)
          """
  
          latitude = self.format_latitude(latitude)
          longitude = self.format_longitude(longitude)
  
          record = latitude + longitude
  
          if None not in [distance_min, distance_max, bearing1, bearing2]:
              record += '%04d' % int(distance_min)
              record += '%03d' % int((distance_min - int(distance_min)) * 1000)
              record += '%04d' % int(distance_max)
              record += '%03d' % int((distance_max - int(distance_max)) * 1000)
              record += '%03d' % int(bearing1)
              record += '%03d' % int((bearing1 - int(bearing1)) * 1000)
              record += '%03d' % int(bearing2)
              record += '%03d' % int((bearing2 - int(bearing2)) * 1000)
  
          if text:
              record += text
  
          self.write_record('C', record)