> I am not sure what you are asking. What specific treatment are you referring to? I suggest that special block in LateX export ( https://orgmode.org/manual/Special-blocks-in-LaTeX-export.html) may be treated differently. Once again, I'm new to org-mode, but here is my intuition: - What is happening now. The #+BEGIN_proof / #+END_proof keywords cause my proof to be seen as a block. Therefore, babel fontification is called to highlight syntax of my proof within my buffer. Timothy already discussed here how inefficient the babel fontification is. - What could happen. Changing (somewhere) the treatment of #BEGIN_proof & co the following way: Assign them to a new face "latex_export_sugar" and ignore them while editing. Doing this, the fontification of the org proof will be made as usual and will be fast enough. While exporting, replace #+BEGIN_proof by \begin{proof} and so on... Do you see what I mean ? Best, Le mar. 22 juin 2021 à 14:13, Eric S Fraga a écrit : > On Tuesday, 22 Jun 2021 at 13:20, Léo Ackermann wrote: > > I am new to org-mode but, is there a reason why #+BEGIN_proof #+END_proof > > and other org-latex-special-block are treated as block ? > > I am not sure what you are asking. What specific treatment are you > referring to? > > -- > : Eric S Fraga via Emacs 28.0.50, Org release_9.4.6-567-g22bf80 > : Latest paper written in org: https://arxiv.org/abs/2106.05096 >