qid_unit_suffixes! {
METRE => " m",
KILOMETRE => " km",
CENTIMETRE => " cm",
MILLIMETRE => " mm",
SQUARE_METRE => " m²",
SQUARE_KILOMETRE => " km²",
SQUARE_CENTIMETRE => " cm²",
SQUARE_MILLIMETRE => " mm²",
CUBIC_METRE => " m³",
CUBIC_KILOMETRE => " km³",
CUBIC_CENTIMETRE => " cm³",
CUBIC_MILLIMETRE => " mm³",
GRAM => " g",
MILLIGRAM => " mg",
KILOGRAM_PER_CUBIC_METRE => " kg/m³",
GRAM_PER_CUBIC_CENTIMETRE => " g/cm³",
MILLILITRE_PER_LITRE => " ml/l",
MILLIGRAM_PER_CUBIC_METER => " mg/cm³",
PARTS_PER_MILLION => " ppm",
MILLIGRAM_PER_KILOGRAM => " mg/k",
GRAM_PER_KILOGRAM => " g/kg",
DEGREE_CELSIUS => " °C",
KELVIN => " °K",
DEGREE_FAHRENHEIT => " °F",
KILOMETRE_PER_HOUR => " km/h",
ASTRONOMICAL_UNIT => " AU",
DEGREE => "°",
}