Finding out Copyright assignment info

https://www.gnu.org/licenses/why-assign.html

https://www.fsf.org/bulletin/2014/spring/copyright-assignment-at-the-fsf

https://www.dreamsongs.com/IHE/IHE-110.html

This is the email where you assign copyright to GNU. assign@gnu.org

sxml->html

https://dthompson.us/rendering-html-with-sxml-and-gnu-guile.html

https://freakspot.net/wp-content/uploads/2017/09/barra-navegacion-Bootstrap.en/without-javascript.html

https://freakspot.net/en/barra-de-navegacion-de-bootstrap-sin-javascript/