cies:
            // - https://github.com/hakimel/reveal.js#configuration
            // - https://github.com/hakimel/reveal.js#dependencies
            Reveal.initialize({
                center: false,
                transition: 'none',           
                /* 
                chalkboard: {
                    src: "chalkboard.json",
                    readOnly: undefined,
                    transition: 800,
                    theme: "whiteboard",
                    //toggleChalkboardButton: { 