Two of the figures of OR gates on this page seem to be incorrectly labelled.
The OR gate representing A + 0 = A shows an output of 0, but should show an output of A.
The OR gate representing A + A = A shows an output of 1, but should also show an output of A.
The OR gate representing A + 0 = A shows an output of 0, but should show an output of A.
The OR gate representing A + A = A shows an output of 1, but should also show an output of A.