Hi,
Sorry to revive this discussion (which I initiated), but the text in the following code does not wrapped around the figure.
Why ?
Fabrice

\setupcolors
[state=start]

\definecolor[MyColorB][c=0.00, m=0.62, y=1.00, k=0.00]
\definecolor[MyColorA][.75(MyColorB,white)]

\defineframedtext
[MyText]
[frame=off,
   background=MyFrame,
   width=\textwidth,
   height=fit,
   location=left,
   style=italic]

\defineoverlay
[MyFrame]
[\useMPgraphic{MyFrame}]

\definelabel
[Définition]
[headstyle=\bf\smallcaps]

\startuseMPgraphic{MyFrame}
    path b ;
    picture p ;
    p := textext.rt("\white\Définition") ;
    p := p shifted (2BodyFontSize,OverlayHeight-ypart center p+.25ExHeight) ;
    b := boundingbox p leftenlarged .5EmWidth rightenlarged .5EmWidth ;
    fill OverlayBox withcolor \MPcolor{MyColorA} ;
    fill b withcolor \MPcolor{MyColorB} ;
    draw p ;
\stopuseMPgraphic

\starttext

\startMyText

\starthanging[location=right]
        {\startMPcode
          path p ;
          p := fullcircle xscaled 4cm yscaled 2cm ;
          fill p withcolor cmyk(0,0.62,1,0) ;
          path q ; q := fullcircle scaled 1cm shifted (1cm, ypart center p) ;
          fill q withcolor blue ;
          picture r ;
          r := textext("\white E")shifted (-0.75cm,ypart center p) ;
          picture s ;
          s := textext("\white A")shifted (1cm, ypart center p) ;
          draw r ;
          draw s ;
          draw p ;
          draw q ;
         \stopMPcode}
Soit A une partie d'un ensemble E.

Si $n_E$ et $n_A$ sont respectivement les nombres d'éléments de E et de A, la {\bi proportion} des éléments de A dans E est le quotient $p=\frac{n_A}{n_E}$.
\stophanging

\stopMyText