Boolean Transform

Key Boolean Transform in Is Member Of refers to a choice from the list Boolean Operation
This entry defines the boolean operation to be applied on the intermediate results, as described in Is Member Of

For example, assume an array specified in Ref List with the three integer elements 4, 7 and 12.
Assume the current predicate function is called in a context where two integer variables x₁ and x₂ are supplied as input.
Then the output of the called predicate function will depend on the exact values of x₁ and x₂, but also on the operator defined here.
To be specific, assume x₁ = 2 and x₂ = 7
Then if the operator here were OR, the output would be TRUE
But if the operator here were AND, the output would be FALSE