Modifies the primary XML file partially. Keeps the original XML files that user made. Unlimited Undo/Redo. Go to reference. Graphically visualized the result of edited text immediately. All of utilities are called by MadyX main. Area A is XML element tree and shows parent and child of MADYMO XML element according to DTD. Area B presents active attribute of selected element in Tree A. Area C shows XML element list to be a friend or a child element. Area D shows attribute of selected element in Area A. Area E denotes Message window.