I posted a similar question a few days ago without success/response but since I have not found a solution anywhere I would like to ask this again: how can I get properly enumerated equations using `\mathcases'? this example does not work: \starttext bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla \placeformula \startformula E(f) = \frac {K_1(f)} {f} \stopformula \placeformula \startformula K_1 \rightarrow \startmathcases \NC f \NC for $f \ll PS$ (flow limited transport) \NR \NC PS \NC for $f \gg PS$ (diffusion limited transport) \NR[+] \stopmathcases \stopformula bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla \stoptext since (as I now have "discovered" myself) the `\NR[+]' is here intended for subcases enumeration (which are, thus not aligned with the right margin0, rather than (like with \mathalign) for whole equation numbering. but omitting the `[+]' does not help either since \placeformula simply does not put an equation number at all. so, simple question: how to get a properly numbered equation using \mathcases? thx,joerg