Syntax: @ABS(X)
X = a numeric value or cell reference containing a numeric value
@ABS returns the absolute (positive) value of X.
Examples:
@ABS(5) = 5
@ABS(-5) = 5
@ABS(52) = 52
@ABS(C15) = 10, where C15 = -10
@SQRT(@ABS(D4)) = 10, where D4 = -100