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OR is an operator to perform a logical OR on the results returned by two relational operators.

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1. This function is used in constraints only.
2. The OR (sometimes called Inclusive OR) returns TRUE if one or both of its arguments are TRUE, and returns FALSE only if both arguments are FALSE.
3. Other operators are AND, EQV, IMP and X<span class=marin_syntax><span class=marin_syntax><span class=marin_syntax><span class=marin_syntax><span class=marin_syntax><span class=marin_syntax><span class=marin_syntax><span class=marin_syntax><span class=marin_syntax>OR</span></span></span></span></span></span></span></span></span>

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