AW: [texhax] Adjusting parentheses for intervals and functions

[Paul Wagner]

> Unfortunately, [1,2] is not the same interval as (1,2).  (And 
> [1,2) is another interval again.)

I know, therefore I prefer the notation [1, 2] for a closed interval, [1, 2[
for an interval open on the right side and so on. Advantage: No confusion
between (1, 2) (interval open on both sides) and (1, 2) (tupel or 1-by-2
matrix or transposed R^2-vector with the elements 1 and 2).

Paul