This folders contains a subset of HXLm.HDP and, at some extend, HXLm.lisp. While this may not be a full implementation of the python interface, this at least help to not make hdp-conventions/README.md too focused on an single programming language.
For convenience, the https://hpd.etica.ai domain as created to allow test the javascript parts of HXLm. Still recommended look at the GitHub (and maybe the source code) that do have a lot of comments.