docs: def _handlePressure(self, d):
          """
          Parse an altimeter-pressure group.
  
          The following attributes are set:
              press    [int]
          """
          press = d['press']
          if press != '////':
              press = float(press.replace('O', '0'))
              if d['unit']:
                  if d['unit'] == 'A' or (d['unit2'] and d['unit2'] == 'INS'):
                      self.press = CustomPressure(press / 100, 'IN')
                  elif d['unit'] == 'SLP':
                      if press < 500:
                          press = press / 10 + 1000
                      else:
                          press = press / 10 + 900
                      self.press = CustomPressure(press)
                      self._remarks.append("sea-level pressure %.1fhPa" % press)
                  else:
                      self.press = CustomPressure(press)
              elif press > 2500:
                  self.press = CustomPressure(press / 100, 'IN')
              else:
                  self.press = CustomPressure(press)