Classes that provide a total order, in the standard sense. (So, for example, this does not include floating point.) Methodsreadonly fun sourcecompare(other: inst): Orderreadonly fun source==(other: inst): Boolreadonly fun source<(other: inst): Boolreadonly fun source>(other: inst): Boolreadonly fun source<=(other: inst): Boolreadonly fun source>=(other: inst): Bool