Being an old timer used to Plain TeX, I'd like to be able to add Plain TeX portions to an org-mode
file and have them be nicely displayed when exported. Is it possible to configure org-mode for this to happen?
In defense of using Plain TeX within an org-mode
file, I would say that Plain TeX is better suited to situations in which one just wants to add a few greek letters and/or formulas, without worriyng about the structure of the document (documentstyle and all that which standard LaTeX usually requires)
$$\matrix{x & = & y \cr a & = & b}$$
gets org-mode confused as this is not valid in LaTeX.{\sl these \rm lowkey \bf a lot}
!