Philip Taylor writes:
> >> L: works under LaTeX
> >> OL: works under LaTeX 2.09
> >> P: works under plain TeX
> >> X: support application, OS specific
>
> +:= E1: requires e-TeX V1
> E2: requires e-TeX V2
> On: requires Omega Vn...
shall we just let the authors provide this clue? rather than trying to
test it independently?
sebastian