Hello, recent org-mode versions have support for maxima via org-babel. But there is no support vor variables. I implemented basic support for variables. A header =var: eq="x^2"= is translated to: #+begin_src maxima eq : x^2; #+end_src I attached a patch to this eMail. Now I can use the output from one maxima block and make a LaTeX equation out of it with one maxima code block and reuse the output and make further maipulations with it. I find it dificult to explain what I want to do, so here is an example: * Reuse Output of maxima code blocks #+source: eq1() #+begin_src maxima :exports none :results output verbatim display2d:false; eq1: x**2; print(eq1); #+end_src #+results: eq1 : x^2 Pretty print equation with LaTeX: #+source: eq1-latex #+begin_src maxima :exports results :results output latex :var eq=eq1() print("\\begin{equation}"); print(tex1(eq)); print("\\end{equation}"); #+end_src #+results: eq1-latex #+BEGIN_LaTeX \begin{equation} x^2 \end{equation} #+END_LaTeX Do some further calculation / maipulation to equation #+source: eq2() #+begin_src maxima :exports none :results output verbatim :var eq=eq1() display2d:false; eq2 : eq + sin(x); print(eq2); #+end_src #+results: eq5 : sin(x)+x^2 Pretty print second equation: #+source: eq2-latex #+begin_src maxima :exports results :results output latex :var eq=eq2() print("\\begin{equation}"); print(tex1(eq)); print("\\end{equation}"); #+end_src #+results: #+BEGIN_LaTeX \begin{equation} \sin x+x^2 \end{equation} #+END_LaTeX With this workflow I have all org features for docmentation of math or engineering works. I am a lisp beginner so my lisp code may not be the best. If there are better ways to accomplish variable support please let me know. -- Best regards Thomas