As far as i know until now, the gp_hook function allow user to add js code, css, etc. But i see there’re a lot of option in there: ( before content, after content, etc ). When we want to add js to specific page, we have to add this line <?php if ( is_page( ‘my-page-slug’ ) ) : ?>. So what is the point of so many options and what are those option ?.And when i add js or css3 i’ll have to put it to wp_header or wp_footer ?. Thanks in advance.