var prj = DlxApp.GetJob().GetProject("Example Sch");
if (!prj.IsValid())
  prj = DlxApp.GetJob().NewProject("Example Sch");
var doc = prj.GetDocument("Examples Sch", DlxApp.DOCTYPE_SCHEMATIC);
if (!doc.IsValid())
{
  doc = prj.NewDocument("Examples Sch", DlxApp.DOCTYPE_SCHEMATIC);
  doc.SetPageFormat("A4", false);
}
if (doc.IsValid() && doc.Activate())
{
  var page = doc.GetActivePage();
  if (page.IsValid())
  {
    var layer = page.GetLayerFromType(DlxApp.LAYERTYPE_DRAWING);
    if (layer.IsValid())
    {
      var pen = new DlxPenStyle(0.5, new DlxColor("orangered"));
      doc.SetStyle(pen);  

      var e2 = layer.DrawEllipse(new DlxPoint(40, 85), 30, 20, 20, 160, 0, DlxApp.ELLIPSE_OPEN);

      e2.SetArcShape(DlxApp.ELLIPSE_CLOSED);
      e2.SetAxes(50, 80);
      e2.SetCenterPoint(new DlxPoint(50, 50));
    }
  }
}