code: def make_back_glossary(self, body):
          
          for glossary in self.article.root.xpath('./back/glossary'):
              gloss_copy = deepcopy(glossary)
              gloss_copy.tag = 'div'
              gloss_copy.attrib['class'] = 'back-glossary'
              body.append(gloss_copy)
docs: Glossaries are a fairly common item in papers for PLoS, but it also
          seems that they are rarely incorporated into the PLoS web-site or PDF
          formats. They are included in the ePub output however because they are
          helpful and because we can.