The files in this directory are non-infrastructure support files that can be used by tests. * `blank.html` - An empty HTML document. * `domain-setter.sub.html` - An HTML document that sets `document.domain`. * `dummy.xhtml` - An XHTML document. * `dummy.xml` - An XML document. * `text-plain.txt` - A text/plain document. * `*.js` - Utility scripts. These are documented in the source. * `*.py` - wptserve [Python Handlers](https://web-platform-tests.org/writing-tests/python-handlers/). These are documented in the source. * `security-features` - Documented in `security-features/README.md`.