Hi Fabrice,
Do you know the step charts module in ConTeXt? I guess you can achieve what you
want as in the example below (sorry, I did not took your example, I am just
copying an example from my archives…).
%%%%%%%%%%
\usemodule[steps]
\starttext
Pour voir que la composée de deux fonctions $f$ et $u$, continues en un point
$x_{*}$, est continue, on peut suivre le schéma suivant~:
\placefigure[middle,none][-]{}{
%\scale[,width=.35\textwidth]{
\startSTEPtable
\cell {$(f\circ u)(x_{*} + o(1)) = $} \text{définition de $f\circ u$}
\cell {$f\left(u\left(x_{*} + o(1)\right)\right) = $} \text {$u$ est
continue}
\cell {$f\left(u(x_{*}) + o(1)\right) = $} \text {$f$ est continue}
\cell {$f\left(u(x_{*})\right) + o(1) =$} \text {définition de $f\circ
u$}
\cell {$(f\circ u)(x_{*}) + o(1)$.}
\stopSTEPtable
%}
}
\stoptext
%%%%%%%%%%
Best regrads: Otared
> On 25 Jul 2016, at 10:36, Fabrice Couvreur <fabrice1.couvr...@gmail.com>
> wrote:
>
> Hello,
> My way is not very elegant but I would do this:
>
> Formula
> arrow text
> Formula
> arrow text
> Formula
> arrow text
> Formula
>
> #########################################################
> \startuseMPgraphic{MyArrow}
> path p ;
> p:=(0,0){right}..(0.5cm,-0.6cm)..(0,-1.2cm){left} ;
> drawarrow p withpen pencircle scaled 1.5bp withcolor 0.625white ;
> \stopuseMPgraphic
>
> \starttext
>
> \showgrid
>
> \math{A\times X=B}
>
> \hfill On multiplie, à gauche, les deux membres de l'égalité par
> \math{A^{-1}}.
>
> \hskip 5cm \relax \dontleavehmode\useMPgraphic{MyArrow}
>
> \math{A^{-1}\times A\times X=A^{-1}\times B}
>
> \hfill On utilise l'égalité \math{A^{-1}\times A=I}.
>
> \hskip 5cm \relax \dontleavehmode \useMPgraphic{MyArrow}
>
> \math{I\times X=A^{-1}\times B}
>
> \hfill On utilise l'égalité \math{X\times I=I\times X=X}.
>
> \hskip 5cm \relax \dontleavehmode \useMPgraphic{MyArrow}
>
> On a donc \math{X=A^{-1}\times B}
>
> \stoptext
> #########################################################
>
> Thanks,
> Fabrice
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maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
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