enum Unit {
  none,
  percent,
  fraction,
  //
  placeholder3,
  placeholder4,
  placeholder5,
  placeholder6,
  placeholder7,
  placeholder8,
  placeholder9,
  // Length
  cm,
  mm,
  inch,
  ft,
  // Time
  s,
  minute,
  hour,
  day,
  week,
  weekDay,
  tick,
  msec,
  //
  placeholder28,
  placeholder29,
  // Angle
  degree,
  radian,
  //
  placeholder32,
  placeholder33,
  placeholder34,
  placeholder35,
  placeholder36,
  placeholder37,
  placeholder38,
  placeholder39,
  // Weight
  g,
  mg,
  ng,
  kg,
  oz,
  lb,
  lbOz,
  //
  placeholder47,
  placeholder48,
  placeholder49,
  //Area
  cm2,
  mm2,
  m3,
  //
  placeholder53,
}