text: /***
   * Excerpted from "The Definitive ANTLR 4 Reference",
   * published by The Pragmatic Bookshelf.
   * Copyrights apply to this code. It may not be used to create training material, 
   * courses, books, articles, and the like. Contact us if you are in doubt.
   * We make no guarantees that this code is fit for any purpose. 
   * Visit http://www.pragmaticprogrammer.com/titles/tpantlr2 for more book information.
  ***/
  extern int j;
  