22 Apr
2010
22 Apr
'10
2:51 p.m.
Le jeudi 22/04/10 à 16h42,
Hans Hagen
so use the [][] variant instead ({}{} is for inline)
OK, that's better :) But the following MCE: \documentclass{article} \usepackage{etex,m-pictex,m-ch-en} \begin{document} \startchemical \chemical[2H_2,PLUS,O_2,GIVES,2H_2O] \stopchemical \end{document} leads to the messages: ppchtex : unknown chemical definition 2H_2 ppchtex : unknown chemical definition O_2 ppchtex : unknown chemical definition 2H_2O and, indeed, only the "+" sign and the arrow are printed. Thanks. -- Denis