out: 'edges',

        // Visibility rule for backwards navigation arrows; "faded", "hidden"
        // or "visible"
        controlsBackArrows: 'faded',

        // Display a presentation progress bar
        progress: true,

        // Display the page number of the current slide
        slideNumber: false,

        // 'all', 'print', or 'speaker'
        showSlideNumber: 'all',

        // Add the current slide number to the URL hash so that reloading the
        // page/copying the URL will return you t