} elsif ($element->{'args'}
                   and $element->{'args'}->[0]->{'contents'}) {
            $multiply = 1;
            foreach my $content (@{$element->{'args'}->[0]->{'contents'}}) {
              if ($content->{'type'} and $content->{'type'} eq 'bracketed_arg') {
                my $prototype_text = '';
                if ($content->{'contents'}) {
                  Texinfo::Convert::Text::set_options_encoding_if_not_ascii(
                                  $self, $self->{'convert_text_options'});
                  $prototype_text
                    = Texinfo::Convert::Text::convert_to_text(
                                     $content,
                                     $self->{'convert_text_options'});
                  Texinfo::Convert::Text::reset_options_encoding(
                                     $self->{'convert_text_options'});
                }
                push @fractions,
                  Texinfo::Convert::Unicode::string_width($prototype_text);
              }
            }
          }
          foreach my $fraction (@fractions) {
            $appended .= '<colspec colwidth="'.($fraction*$multiply)
                         .'*"></colspec>';
          }
        }
      } elsif ($cmdname eq 'float') {
        my $anchor = _output_anchor($element);
        $result .= $anchor . "\n" if ($anchor ne '');
      } elsif ($cmdname eq 'verbatim') {
        push @format_elements, 'screen';
      } elsif ($cmdname eq 'displaymath') {
        push @format_elements, 'informalequation';
        push @format_elements, 'mathphrase';
      } elsif ($cmdname eq 'quotation' or $cmdname eq 'smallquotation') {
        my $format_element;
        if ($element->{'extra'}) {
          if ($element->{'extra'}->{'authors'}) {
            foreach my $author (@{$element->{'extra'}->{'authors'}}) {
              if ($author->{'args'} and $author->{'args'}->[0]->{'contents'}) {
                $appended .= '<attribution>'.
                       _convert($self, $author->{'args'}->[0])
                           ."</attribution>\n";
              }
            }
          }
        }
        if ($element->{'args'}
            and $element->{'args'}->[0]->{'contents'}) {
          my $quotation_arg_text
            = Texinfo::Convert::Text::convert_to_text(
                          $element->{'args'}->[0],
                            $self->{'convert_text_options'});
          if ($docbook_special_quotations{lc($quotation_arg_text)}) {
            $format_element = lc($quotation_arg_text);
          } else {
            $self->{'pending_prepend'}
              = _convert($self, $self->cdt('@b{{quotation_arg}:} ',
                            {'quotation_arg' =>
                                  $element->{'args'}->[0]}));
          }
        }
        $format_element = 'blockquote' if (!defined($format_element));
        push @format_elements, $format_element;
      } elsif ($cmdname eq 'cartouche') {
        push @format_elements, 'sidebar';
        if ($element->{'args'}
            and $element->{'args'}->[0]->{'contents'}) {
          my $title = _convert($self, $element->{'args'}->[0]);
          if ($title ne '') {
            $appended .= '<title>'.$title.'</title>'."\n";
          }
        }
      } elsif ($Texinfo::Commands::block_commands{$cmdname} eq 'format_raw') {
        return '' if (!$self->{'expanded_formats'}->{$cmdname});
        # the context is here only for the command, so this is forgotten
        # once all the raw internal text has been formatted
        $self->{'document_context'}->[-1]->{'raw'} = 1;
      } elsif ($Texinfo::Commands::block_commands{$cmdname} eq 'raw'
               or $Texinfo::Commands::block_commands{$cmdname} eq 'menu') {
        return '';
      }
      foreach my $format_element (@format_elements) {
        my $attribute = shift @attributes;
        $attribute = '' if (!defined($attribute));
        $result .= "<$format_element${attribute}>";
        unshift @close_format_elements, $format_element;
      }
      $result .= $appended if (defined($appended));
    }
  }
  #warn " end of cmdname\n";