         return false
     return c.indexOf(MARKERS.cell) != -1 or c.indexOf(MARKERS.output) != -1
 
-
+# Create gutter elements
 open_gutter_elt   = $('<div class="CodeMirror-foldgutter-open CodeMirror-guttermarker-subtle"></div>')
 folded_gutter_elt = $('<div class="CodeMirror-foldgutter-folded CodeMirror-guttermarker-subtle"></div>')
 line_number_elt   = $("<div style='color:#88f'></div>")

        # starts with a cell or output marker and is not already marked.
        # If not marked, mark it appropriately, and possibly process any
        # changes to that line.
        ##tm = misc.mswalltime()
        before = @editor.codemirror.getValue()
        if opts.pad_bottom
            @pad_bottom_with_newlines(opts.pad_bottom)

                    input_line = context.input_line
                    if not input_line?
                        input_line = line - 1
                        while input_line >= 0 and cm.getLine(input_line)[0] != MARKERS.cell
                            input_line -= 1
                    @_process_line_gutter(cm, line, 'number', line - input_line) # relative line number
                else
