docs: def fmt(self):
          """Make printable representation out of this instance.
          """
          tmpl = string.Template(self.template)
          kw = {}
          for key, val in self.kw.items():
              if key == 'phrase':
                  kw[key] = val
              else:
                  kw[key] = val.fmt()
          return tmpl.substitute(kw)