Hi all On Wed, Sep 5, 2012 at 11:46 PM, Kyle Andrews wrote: > [...] > #+TBLFM: $2=uconvert($1, lb) > [...] > #+begin_src emacs-lisp > (defmath uconvert (expression new-units) > (math-convert-units expression new-units))) > #+end_src Calc `defmath' is not mentioned in the Org manual or on Worg, so I suggest the attached patch for the Org manual. Michael