anchor.diff:                  // callback when Cytoscape Web has finished drawing
                   vis.ready(function() {
   
  +                    //Add new comment field to nodes and edges:
  +                   var comment_field = { name: "Comment", type: "string", defValue: null };
  +                   vis.addDataField(comment_field);
  +
                       // add a listener for when nodes and edges are clicked
                       vis.addListener("click", "nodes", function(event) {
   
  
positive.code:                             table.id = table_id;
                              table.class = "properties_table";
  
  
                              var dataFields = getDataFields(group_id);
  
                              for(var j in dataFields){
                                  var field_name;
                                  var field_value= {};
  
negative.code:                   }
  
                }
  
                 function export_vis(format) {
                    vis.exportNetwork('xgmml', '<%= model_path(@model)%>/export_as_xgmml?type=xml');
                 }
  