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Logical Operations

and

AND tf1 tf2
(AND tf1 tf2 tf3 ...)

outputs TRUE if all inputs are TRUE, otherwise FALSE. All inputs must be TRUE or FALSE. (Comparison is case-insensitive regardless of the value of CASEIGNOREDP. That is, true or True or TRUE are all the same.)

See section caseignoredp

or

OR tf1 tf2
(OR tf1 tf2 tf3 ...)

outputs TRUE if any input is TRUE, otherwise FALSE. All inputs must be TRUE or FALSE. (Comparison is case-insensitive regardless of the value of CASEIGNOREDP. That is, true or True or TRUE are all the same.)

See section caseignoredp

not

NOT tf

outputs TRUE if the input is FALSE, and vice versa.


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