alias application boolean class constant
date file integer list number
POSIX file
real record reference
RGB color
script text centimetres centimeters feet
inches kilometres kilometers metres meters
miles yards
square feet square kilometres square kilometers square metres
square meters square miles square yards
cubic centimetres cubic centimeters cubic feet cubic inches
cubic metres cubic meters cubic yards
gallons litres liters quarts grams
kilograms ounces pounds
degrees Celsius degrees Fahrenheit degrees Kelvin

----------------------------------------------------

[
	["class", "alias"], ["class", "application"], ["class", "boolean"], ["class", "class"], ["class", "constant"],
	["class", "date"], ["class", "file"], ["class", "integer"], ["class", "list"], ["class", "number"],
	["class", "POSIX file"],
	["class", "real"], ["class", "record"], ["class", "reference"],
	["class", "RGB color"],
	["class", "script"], ["class", "text"], ["class", "centimetres"], ["class", "centimeters"], ["class", "feet"],
	["class", "inches"], ["class", "kilometres"], ["class", "kilometers"], ["class", "metres"], ["class", "meters"],
	["class", "miles"], ["class", "yards"],
	["class", "square feet"], ["class", "square kilometres"], ["class", "square kilometers"], ["class", "square metres"],
	["class", "square meters"], ["class", "square miles"], ["class", "square yards"],
	["class", "cubic centimetres"], ["class", "cubic centimeters"], ["class", "cubic feet"], ["class", "cubic inches"],
	["class", "cubic metres"], ["class", "cubic meters"], ["class", "cubic yards"],
	["class", "gallons"], ["class", "litres"], ["class", "liters"], ["class", "quarts"], ["class", "grams"],
	["class", "kilograms"], ["class", "ounces"], ["class", "pounds"],
	["class", "degrees Celsius"], ["class", "degrees Fahrenheit"], ["class", "degrees Kelvin"]
]

----------------------------------------------------

Checks for all classes.