customControls.js

/*:
 * @plugindesc Enables alternate controls
 * @author Michael Stroud
 *
 * No warranty, express or implied. I can't guarantee that it will
 * work at all. If it's useful to you, credit is appreciated.
 * You may redistribute, but do not remove any of the above.
 * @help
 * This script enables Z to confirm and X to cancel and open the menu */

(function(){
    Input.keyMapper[90] = 'ok';       //z
    Input.keyMapper[88] = 'escape';   //x
})();