or — bitwise or
expression or expression
or : Z x Z -> Z
2 or 4 = 6
Logical or yields the following bitwise combinations: 0 or 0 = 0, 0 or 1 = 1, 1 or 0 = 1 and 1 or 1 = 1. If the expressions are not in Z, they are truncated before the bitwise or is performed.
