Sub Types

Boolean	Boolean value
Byte	Byte value
Currency	Currency value
Date	Date value
Decimal*	Decimal value
Double	Double-precision floating-point number
Empty*	Uninitialized
Error*	An error value
Integer	Integer
Long	Long integer
Nothing*	Object variable that doesn't refer to an object
Null*	No valid data
Object	An object
Single	Single-precision floating-point number
String*	String

The variant has a special sub type called date-variant that can be used to hold dates.

The variant has a special sub type called string variant that can be used to hold variable length strings.