The utf8add bundle is copyright © 2020 Palle Jorgensen (hamselv@pallej.dk) under the GNU GENERAL PUBLIC LICENSE. View LICENSE for details. The bundle contains the packages utf8add.sty utf8hax.sty The utf8add package provides additional support for the use of UTF-8 encoded input. This is intended for making LaTeX input more readable. The utf8hax package is using UTF-8 characters for easier access to math in LaTeX. However making the LaTeX input less readable. Request for additional support can be emailed to the author.