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This represents a whole number of up to 15 digits (between -999999999999999 to +999999999999999).

For some uses where appropriate the range will be restricted to 5 or 9 digits

The letter U can also be used as an iconstant. Its meaning is "undefined" (invalid/faulty). It is in fact internally held as a very large negative number.

IMPORTANT: numeric variables ivars and wvars are initially set to zero, not undefined unless RCP UNDEFINED is used.

Examples of iconstants:

45

0

45608

100000000000000

-456237654

-1

u

The following definitions use iconstants:

di $start=15,

di $finish=$start+235,