#appendix  supplementary material that is collected and appended at the back of a book
  supertype:  addendum__supplement__postscript  textual matter that is added onto a publication; usually at the end
  subtype:  shirttail.appendix  a brief addendum at the end of a newspaper article
  subtype:  codicil  a supplement to a will; a testamentary instrument intended to alter an already executed will

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