The method includes modifying a Javascript object notation structure to include a tag on at least one object and a tag on at least one array containing a first version of the Javascript object notation structure. The method includes in response to identifying a changed second version of the Javascript object notation structure, adjusting the tag on the at least one object and the tag on the at least one array to include the second version of the Javascript object notation structure. The method includes adjusting the displayed first version of the Javascript object notation structure with the second version of the Javascript object notation structure. The method includes in response to receiving data indicating an undo/redo action, adjusting the displayed second version of the Javascript object notation structure to the first version of the Javascript object notation structure.