Restore retheng and rethengext; old links do not work anymore (!1) · Merge requests · complexnumbers / complexnumbers.ru · GitLab

Konata Izumi requested to merge Kona-chan/kona-chan.gitlab.io:master into master Jun 03, 2021

Restore content from https://web.archive.org/web/20191122063726/http://argonov.ru/rethtexteng.html and https://web.archive.org/web/20191122063726/http://argonov.ru/retheng.html with updated header.