| e_PDO | Enable PDO mode (used in PHP > 7 and when mysql_* methods are not available) |
| e_HTTP_STATIC | define('e_HTTP_STATIC', 'https://static.mydomain.com/'); // Use a static subdomain for js/css/images etc. - used on e107.org or here |
| X-FRAME-SAMEORIGIN | define('X-FRAME-SAMEORIGIN', false); Option to override X-Frame-Options - used f.e. you want to create mockup of site in online tools |
| e_DEBUG_JQUERY | define('e_DEBUG_JQUERY', 2); - using JQuery 2 |
| e_DEBUG_JS_FOOTER | define('e_DEBUG_JS_FOOTER', true); - loading JQuery in footer |