Manual: add set union and intersection operators in the macro-processor

parent 71def361
......@@ -10799,6 +10799,8 @@ The following operators can be used on arrays:
* Comparison operators: ``==, !=``
* Dereferencing: if ``v`` is an array, then ``v[2]`` is its 2nd element
* Concatenation of two arrays: ``+``
* Set union of two arrays: ``|``
* Set intersection of two arrays: ``&``
* Difference ``-``: returns the first operand from which the
elements of the second operand have been removed.
* Cartesian product of two arrays: ``*``
......
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