Nikolai Weibull wrote:
\usemodule[nath] \starttext $A = (B, C, D, E)$ \placeformula \startformula A = (B, C, D, E) \stopformula \stoptext
! Undefined control sequence. l.6 A = ( B, C, D, E) ? X
Try \startnathequation ... \stopnathequation instead. Or patch t-nath.tex for the same effect, I have (but this might have side-effects): \let\nath!startformula\startformula \let\nath!stopformula\stopformula \def\startnathequation{% \begingroup \curr@cr@is@wall@cr \nath!startformula \startnatheq \hbox\bgroup \dmathon@ \wall\mathopen{}% } \def\stopnathequation{% \return \dmathoff@ \egroup \stopnatheq \nath!stopformula \endgroup } \let\startformula\startnathequation \let\stopformula\stopnathequation regards, Christopher Creutzig