This method takes a single param that can be either a single string or an array of files to load, relative to the SGL_WEB_ROOT, i.e. the www folder in your Seagull install:
Also you now have the possibility to require a file that will be loaded in every page of your site.
Simply add it to the main configuration file :
Again you can provide several files, separating them with a semicolon ";"
and require remote files by providing an absolute path.
This will add the files js/PageView.js and js/packaging.js to the <head> element of your html file when the manager is loaded.