#title.subheading  a general or descriptive heading for a section of a written work; "the novel had chapter titles"
  supertype:  #subheading__subhead  a heading of a subdivision of a text
  subtype:  #credit.title  an entry on a list of persons who contributed to a film or written work
  subtype:  #caption__legend  brief description accompanying an illustration
  subtype:  #subhead__subtitle  secondary or explanatory title

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