I feel it&#x27;s appropriate to link to a Python module I wrote some time ago exploring this book and the systems behind it: <a href="https:&#x2F;&#x2F;github.com&#x2F;subsetpark&#x2F;necktie" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;subsetpark&#x2F;necktie</a><p>(The link in the read me is unfortunately expired)