In the first example, the ANY quantifier acts the same as if no explicit quantifier was given. That is, an object is selected if at least one Tags value is Confidential. In the second example, all of an object's Tags values must have one of the terms in the set {Priority, Internal} in order to be selected. In the last example, none of the object's Tags can equal the value "Do Not Forward" (case-insensitive). The NONE quantifier is true if the quantified field is null.