graydon: (Default)

[personal profile] graydon 2017-07-16 11:37 pm (UTC)(link)
Supposing you're directly editing the HTML content:

https://www.w3schools.com/html/html_links.asp

The term of art is "bookmark".
davidgoldfarb: (Default)

[personal profile] davidgoldfarb 2017-07-17 01:34 am (UTC)(link)
LibreOffice should allow you to make footnotes that are links. Try reading this: https://superuser.com/questions/627823/set-hyperlinks-and-anchors-on-libreoffice
graydon: (Default)

[personal profile] graydon 2017-07-17 01:59 am (UTC)(link)
Or possibly footnotes directly.