To Eric and to Ihor, many thanks. My problem was already solved by Eric with the LateX magic trick, so, I consider now that the problem is solved.
Best wishes, Jo. Le 13/10/2021 à 09:50, Ihor Radchenko a écrit : > Joseph Vidal-Rosset <jos...@vidal-rosset.net> writes: > >> Maybe. I'm using presently Prelude Emacs and in elpa I have org-20210920/ >> >> What can I do? > > I guess https://prelude.emacsredux.com/en/latest/support/ > ELPA does have the right Org mode version: > http://elpa.gnu.org/packages/org.html >