Template:EpiphanyHelpText
This template is used to create a placeholder div, with the class of 'epiphanyhelptext', on the wiki page with a data attribute. The data attribute contains the database ID of a help text article.
The template gets populated by an AJAX call that is defined in Mediawiki:Common.js.
The database calls are handled by this PHP file: extensions/EpiphanyHelpText/helptext.php