\startreusableMPgraphic{strucpie}
  input piechartmp;
  SetupText(1,this,this);
  Segment(1674,"$\sqrt x$",(.8,.0,.0),"16740");
  Segment(305.3,"\TeX",(.0,.6,.0),"3053");
  Segment(55.2,"help",(.6,.8,.8),"552");
  PieChart(6cm,0.1,65,330,0);
  Label.auto(0)(name)(outwards,0);
\stopreusableMPgraphic

\starttext
\reuseMPgraphic{strucpie}
\stoptext
