hi contexers I'm having pb trying to arrange aligned centered equations. When compiling for right %\eqalignno or left %\leqalign, no pb's. But contex is'n t happy with centered ones %\eqalign. Don't know how to solve this tiny but irritating pb. Here a minimal exemple : %working \placeformula[form:a-prime] \startformula a^{'} = \frac{1,05 \times N_{s}}{q_{s}} = \frac{1,05 \times 0,246}{0,15} = 1,722 \approx \inframed{1,75 m} \stopformula %working \placeformula[form:a-prime] \startformula \eqalignno{ %%or \leqalignno%% a^{'} & = & \frac{1,05 \times N_{s}}{q_{s}} \formulanumber[form:a-prime:a]{a} \cr & = & \frac{1,05 \times 0,246}{0,15} \formulanumber[form:a-prime:b]{b} \cr & = & 1,722 \approx \inframed{1,75 m} \formulanumber[form:a-prime:c]{c} \cr } \stopformula %not working \placeformula[form:a-prime] \startformula \eqalign{ %%or \leqalignno%% a^{'} & = & \frac{1,05 \times N_{s}}{q_{s}} \formulanumber[form:a-prime:a]{a} \cr & = & \frac{1,05 \times 0,246}{0,15} \formulanumber[form:a-prime:b]{b} \cr & = & 1,722 \approx \inframed{1,75 m} \formulanumber[form:a-prime:c]{c} \cr } \stopformula %not working \usemodule[nath] \placeformula \startgather f(x) = x \\ g(x) = x2 \\ h(x) = x3 \stopgather \stopformula Thanks for the answer Olivier