#addendum__supplement__postscript  textual matter that is added onto a publication; usually at the end
  supertype:  matter  written works (especially in books or magazines); "he always took some reading matter with him on the plane"
  part of:  back_matter
  subtype:  appendix  supplementary material that is collected and appended at the back of a book
     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
  subtype:  sequel__continuation  a part added to a book or play that continues and extends it

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