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The value range of an Integer type is -9 223 372 036 854 775 808 .. 9 223 372 036 854 775 807.
Note: until version 21.0.70, the value range of an Integer type was -2 147 483 648 .. 2 147 483 647.
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The value range of Real type is 2.3x10-308 ≤ |x| ≤ 1.7x10308 and zero value (0).
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A value containing an internal identifier of the D2000 system that uniquely determines an object. It is used in some special cases. It is compatible with the Integer type, however it is only 32-bit.