expr bit-wise "xor" operator
Arguments must be integers, result is an integer.
Bit n of the result is 1 if bit n of the two arguments differ. Otherwise, bit n of the result is 0.
% expr 0b010 | 0b000 2
[So, what do I need to add to this example so the result is binary as well? Some sort of format - but I don't see a binary conversion sequence in the docs...]