def _special(open, close, data=nil, attrs=nil, order=[])
      _indent
      @target << open
      @target << data if data
      _insert_attributes(attrs, order) if attrs
      @target << close
      _newline
    end
def _special(open, close, data=nil, attrs=nil, order=[])
      _indent
      @target << open
      @target << data if data
      _insert_attributes(attrs, order) if attrs
      @target << close
      _newline
    end
Insert special instruction.