. . . "Definition: A pointer to an external object, such as an entry in a database or a term in a controlled vocabulary.\nComment: This class is for organizational purposes only; direct instances of this class should not be created."^^ . "Definition: A pointer to an external object, such as an entry in a database or a term in a controlled vocabulary.\nComment: This class is for organizational purposes only; direct instances of this class should not be created."^^ . "Definition: A pointer to an external object, such as an entry in a database or a term in a controlled vocabulary.\nComment: This class is for organizational purposes only; direct instances of this class should not be created."^^ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .