@DarkTemplar Parameters in a category definition are foundation courses (There exists also a key word parameter, metaclass for location the type of the class in Python 3) agf img-src * 'self' knowledge: https:; just isn't a good Answer since it might make your application vulnerable in opposition to XSS assaults. https://dantetnbrf.anchor-blog.com/17877282/helping-the-others-realize-the-advantages-of-accessory-boxes