No, that is not what i meant. " | | " means absolute value. In math, "( )" means non inclusive and "[ ]" means inclusive. For example,
(4, 20] would mean that 4 is not included in the answer, but is the lower bound, and 20 is included in the answer, and is the upper bound. So at the value of 20, it would also hold true, but at 4 it would not hold true.