Quelltext der Konstruktion
  board = JXG.JSXGraph.initBoard('jxgbox', {boundingbox: [-2, 20, 20, -2], axis: true, grid: false,
                                 keepaspectratio: true, showcopyright: false});
  p3 = board.createElement('point', [8, 3]);
  p4 = board.createElement('point', [8, 8]);
  c1 = board.createElement('circle', [p4, 4]);
  p6 = board.createElement('glider', [0, 0, c1], {name:"D"});
  g = board.createElement('line', [p3, p6]);
  c2 = board.createElement('circle', [p6, 3]);
  p14_1 = board.createElement('intersection', [c2,g,0], {name: "T"});
  p14_2 = board.createElement('intersection', [c2,g,1]);
  loc = board.createElement('locus', [p14_1], {strokeColor: 'red', strokeWidth: '1px'});