* Lab - Plantillas -  jinja ( Python -> Flask..)
https://en.wikipedia.org/wiki/Jinja_(template_engine)
https://jinja.palletsprojects.com/

* Python ~ tutorial Jinja templates
https://realpython.com/primer-on-jinja-templating/

* Control flow - Jinja tpl 's

MUSICA INSTRUMENTAL : Wim Mertens