#double_bar  notation marking the end of principal parts of a musical composition; two adjacent bar lines
  supertype:  bar_line__barline  a vertical line marking the boundary between musical bars
     supertype:  line_like_mark__line  a mark that is long relative to its width; "He drew a line on the chart"; "The substance produced characteristic lines on the spectroscope"
        supertype:  mark  a visible indication made on a surface; "some previous reader had covered the pages with dozens of marks"
           supertype:  indicant__indication  a signal that serves to indicate or suggest something; "an indication of foul play"; "indications of strain"; "symptoms are the prime indicants of disease"
              supertype:  signal__sign__signaling  any communication that encodes a message; "signals from the boat suddenly stopped"
                 supertype:  communication  something that is communicated between people or groups
                    supertype:  description_content/medium/container__descriptioncontent/medium/container
                       supertype:  non_spatial_object_that_is_not_an_attribute_or_quality_or_measure
                          supertype:  non_spatial_object__nonspatialobject  abstraction or description content/medium/container (a description medium that has some spatial feature is both instance of sumo#object and pm#non_spatial_object
                             supertype:  entity  something that can be "involved" in a situation
                                supertype:  thing__something___T__t___3D_or_4D_thing_or_anything_else  any category (type or individual) is instance of this type; any type is also a subtype of this type
                             supertype:  intangible  The collection of things that are not physical -- are not made of, or encoded in, matter. Every cyc#Collection is a cyc#intangible (even if its instances are tangible), and so are some cyc#individuals.  Caution: do not confuse `tangibility' with `perceivability' -- humans can perceive light even though it's intangible--at least in a sense.
                                supertype:  partially_intangible__partiallyintangible  The collection of things that either are wholly intangible (see cyc#Intangible) or have at least one intangible (i.e. immaterial) part (see cyc#intangibleParts). This includes intangible individuals, such as instances of cyc#Number-General  or cyc#Agreement, as well as non-individuals (all of which are intangible), i.e. instances of cyc#SetOrCollection.  It also includes things that have both tangible and intangible components (see cyc#CompositeTangibleAndIntangibleObject),  such as a printed copy of a newspaper (as its information content is intangible) or a person (as her mental states are intangible).
                                   supertype:  thing__something___T__t___3D_or_4D_thing_or_anything_else  any category (type or individual) is instance of this type; any type is also a subtype of this type
                    supertype:  social_relation  a relation between living organisms (especially between people)
                       supertype:  relation  an abstraction belonging to or characteristic of two entities or parts together
                          supertype:  thing_that_can_be_seen_as_a_relation  usable as relation type
                             supertype:  thing_playing_some_role  category to classify things according to roles/viewpoints; classification under this category is application-dependant
                                supertype:  thing__something___T__t___3D_or_4D_thing_or_anything_else  any category (type or individual) is instance of this type; any type is also a subtype of this type
     supertype:  musical_notation__musicalnotation  a notation used by musicians
        supertype:  notation__notational_system  a technical system of symbols used to represent special things
           supertype:  writing.symbols  letters or symbols written or imprinted on a surface to represent the sounds or words of a language; "he turned the paper over so the writing wouldn't show"; "the doctor's writing was illegible"
              supertype:  written_communication__writtencommunication__written_language__writtenlanguage  communication by means of written symbols
                 supertype:  communication  something that is communicated between people or groups

No statement uses or specializes double_bar; click here to add one.