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   Allows access to the definition frame of the relation set between the
   selected object and the parent object.  In case that no relation is
   defined, the system will verify if there exists a 1:N relation defined
   between the files associated to the respective objects. If positive, the
   system will allow the definition of a relation between the 2 objects,
   giving the opportunity to select the parent object.  Otherwise, the system
   will not allow any further definition.