Relation lis#class_of_class_of_relationship (?,?)  click here for details
  exclusion:  class_of_class_of_individual  class_of_number  arithmetic_number  class_of_property_space  class_of_shape_dimension
  supertype:  class_of_class  relation_with_particular_property (pm)
  subtype: {class_of_class_of_usage_of_representation class_of_class_of_responsibility_for_representation class_of_class_of_representation_translation class_of_class_of_relationship_with_signature class_of_class_of_representation class_of_dimension_for_shape class_of_class_of_composition property_space_for_class_of_shape_dimension class_of_scale class_of_namespace dimension_of_shape}
  member:  class_of_relationship (*)  click here for details
     member:  relationship (?,?)  indicates something that one thing has to do with another; click here for details