Each <dlm:fragment> element can contain from zero to many <dlm:audience> elements. Each audience element defines a group of users who will receive that fragment. If a fragment has more than one audience element then the set of users that get that fragment is the union of all nested audience elements.
Define audiences using:
GuestUserEvaluatorFactory
AllUsersEvaluatorFactory
PersonEvaluatorFactory
GroupMembershipEvaluatorFactory
The 'evaluatorFactory' Attribute
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