This is spot on, thanks. In fact I'm reasonably sure that it was 'docco' I was remembering having seen in the past. While digging around with your references I

This is spot on, thanks. In fact I'm reasonably sure that it was 'docco' I was remembering having seen in the past. While digging around with your references I came across Pycco [1] which is a python optimized version of docco and as it's Python I'm trying to document that's a very useful thing to find. Thanks. [1] https://pycco-docs.github.io/pycco/ https://pycco-docs.github.io/pycco/