I'm using the latex "breqn" package because it allows me to use the line breaks that Calc adds to the output by itself; that looks very good most of the time, is even a bit aware of the window width, and doesn't make latex barf when line breaks appear inside paren expressions (as it does normally). I don't know if I can assume that every latex installation has "breqn" installed. Without something like "breqn" the results were not satisfactory in my experiments, I found that solution after a long with trouble. Then, for subformula editing etc., we probably want to provide a way to turn the image into the source output and back. And: how should this feature be enabled? Should it be provided as a separate language? The one dimension we have for the prefix arg of d L is already completely exhausted. Anything else I forgot to consider? I guess it would be nice to get rid of all or most of the org dependencies. Oh, and I didn't mention yet that this is super cool and thus has a high priority to have ;-) Regards, Michael. In GNU Emacs 28.0.50 (build 5, x86_64-pc-linux-gnu, GTK+ Version 3.24.23, cairo version 1.16.0) of 2020-11-24 built on drachen Repository revision: 9a574a6e51d669eaff091ab590fb18733a386d2c Repository branch: master Windowing system distributor 'The X.Org Foundation', version 11.0.12008000 System Description: Debian GNU/Linux bullseye/sid