ABS

PURPOSE:
Returns the ABSolute value of a NUMERIC.

TYPE: NUMERIC
FUNCTION SYNTAX:
ABS(expr)

EXAMPLES:
0100 LET X=ABS(X)
0250 LET Y=ABS(X+5)
1000 PRINT ABS(N*2)

NOTES:
The ABSOLUTE VALUE of a number represents the number without any SIGN. For example:
ABS(7) is 7; ABS(-7) is also 7.