https://github.com/eyeinsky/org-anki https://gitlab.com/phillord/org-drill/ https://github.com/weirdNox/org-noter
https://yiufung.net/post/anki-org/ https://doubleloop.net/2020/08/02/adding-flashcards-to-your-... https://www.emacswiki.org/emacs/IncrementalReading#h5o-10
