{Closegrf.PAS}
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  {Sample code for the CloseGraph procedure.}

  uses Graph;

  var Gd, Gm: Integer;
  begin
    Gd := Detect;
    InitGraph(Gd, Gm, '');
    if GraphResult <> grOk then
      Halt(1);
    Line(0, 0, GetMaxX, GetMaxY);
    Readln;
    CloseGraph;   { Shut down graphics }
  end.