Good node but woefully incomplete! How could you forget bitwise negation? It's really rather useful with bitmasks. For instance, $flags &= ~$foo_flag is a common idiom for flipping a bit off.
I'll pick a nit while I'm at it. Throughout your node you refer to "binary AND", "binary OR", and "binary XOR". Strictly speaking, you mean "bitwise" rather than "binary." A binary operator is an operator that takes two operands. Both logical and bitwise AND are binary operators. For contrast, consider unary operators such as numerical, logical, and bitwise negation which take one operand as well as the trinary operator (?:) which takes three.
Just the same, ++ for the otherwise thorough explanation.
"My two cents aren't worth a dime.";
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