Nicolas Goaziou writes: >> It creates this command in the .tex file: >> >> \#+begin$_\mathrm{multicols}$ > > It works here. Difficult to say what is wrong in your buffer without > more context.
That result looks exactly like my problem with multiline \[...\], i.e. the parser found something it considers an element inside the multicols block and that made the block itself look like random text that needs to be escaped. Regards, Achim. -- +<[Q+ Matrix-12 WAVE#46+305 Neuron microQkb Andromeda XTk Blofeld]>+ Factory and User Sound Singles for Waldorf Blofeld: http://Synth.Stromeko.net/Downloads.html#WaldorfSounds