/**
 * The application.
 * @constructor
 */
function Application() {
}

/**
 * The active book.
 * @type Book
 */
Application.activeBook;

/**
 * The front-most document.
 * @type Document
 */
Application.activeDocument;

/**
 * The current script running from the Scripts panel.
 * @type File
 */
Application.activeScript;

/**
 * The undo mode for the current script execution.
 * @type UndoModes
 */
Application.activeScriptUndoMode;