         try
             if not opts.cm?
                 @_process_sage_updates(@editor.codemirror, opts.start, opts.stop)
-                #if @editor._split_view
-                #    @_process_sage_updates(@editor.codemirror1, opts.start, opts.stop)
+                if @editor._split_view
+                    @_process_sage_updates(@editor.codemirror1, opts.start, opts.stop)
             else
                 @_process_sage_updates(opts.cm, opts.start, opts.stop)
         catch e

                    marks = []
                if marks.length == 0
                    # create the input mark here
                    console.log("creating input mark at line #{line}")
                    input = cell_start_template.clone()
                    opts =
                        shared         : false
                        inclusiveLeft  : false
                        inclusiveRight : true
                        atomic         : true
                        replacedWith   : input[0] #$("<div style='margin-top: -30px; border: 1px solid red'>")[0]
                    mark = cm.markText({line:line, ch:0}, {line:line, ch:x.length}, opts)
                    mark.element = input
                    mark.type = 'input'
                    mark.uuid = uuid

            when MARKERS.output


                cm.addLineClass(line, 'gutter', 'sagews-output-cm-gutter')
                cm.addLineClass(line, 'text',   'sagews-output-cm-text')
                cm.addLineClass(line, 'wrap',   'sagews-output-cm-wrap')
                @render_output(marks[0], x.slice(38), line)

            else
                if context.hide?
