Graham bemethavinci on the top right of each of the demo sections is a hidden invisible button it looks like [<>] it shows when you click in any of the demos
the button displays the source code of that section
dont delete any code that page is your library you should move it into a folder or rename it and work on your own index _header and _footer

The pagination is just a dummy to show you the code
it will do nothing to xtgems pagination unless you have set a xtscript custom pagination using the same structure