# File rxml/xforms_transformer.rb, line 722
      def xcase(doc, id, label=nil, xstyle=nil)
        @view_buffer << "<m:case id=\"#{id}\" label=\"#{label}\"" 
        if xstyle
          @view_buffer << " #{xstyle}"
        else 
          @view_buffer << ' style="tab"'  
        end
        @view_buffer << '>'
        yield doc
        @view_buffer << '</m:case>'
      end