Hans van der Meer wrote: > I get the impression that none if these argument related stuff works > inside the halign template.
Correct. TeX is in a very special state when it is looking for a potential \noalign, and the argument parsing required for optional arguments destroys that special state, Greetings, Taco _______________________________________________ ntg-context mailing list ntg-context@ntg.nl http://www.ntg.nl/mailman/listinfo/ntg-context
