Hi, Still with the idea of using lmtx, I get a compilation error when I use pgfplots. Thank you. Fabrice #################################################### open source > level 9, order 92, name 'pgfplotsbinary.data.code.tex' tex error > tex error on line 42 in file pgfplotsbinary.data.code.tex: ! Undefined control sequence l.42 \catcode`\ =11^^I\expandafter\xdef\csname pgfp@bin@ \the\counter^^I\endcsname{^^20}\endgroup\advance\counter by1 lua error: ? <empty file> The control sequence at the end of the top line of your error message was never \def'ed. You can just continue as I'll forget about whatever was undefined. mtx-context | fatal error: return code: 256 TeX Output exited abnormally with code 1 at Mon Apr 6 22:19:01