void drawingExample() {

	TH1 *hist = new TH1F("hist", "Just a Histogram", 40, -2, 2);
	hist->FillRandom("gaus");
	TBox box;
	box.SetFillColor(33);
	box.SetLineColor(38);

	TCanvas *canvas = new TCanvas("canvas", "Just a Canvas", 100, 100, 800, 800);
	canvas->Divide(2, 2);

	// Does not work since the hist, the axes and the bounding box of the graph are covered by the box
	canvas->cd(1);
	hist->Draw();
	gPad->Modified();
	gPad->Update();
	box.DrawBox(-1, gPad->GetUymin(), 1, gPad->GetUymax());

	// Works but still the axes and the bounding box of the graph are covered by the box.
	// This is also very inefficient since the hist is drawn twice and so all drawing commands
	// in ps-files will appear twice, too!
	canvas->cd(2);
	hist->DrawCopy();
	gPad->Modified();
	gPad->Update();
	box.DrawBox(-1, gPad->GetUymin(), 1, gPad->GetUymax());
	hist->DrawCopy("same");

	// Now the axes are no longer coverd by the box. But still the bounding box of the graph is.
	// Also the hist is drawn twice and therefore this is very inefficient!
	canvas->cd(3);
	hist->DrawCopy();
	gPad->Modified();
	gPad->Update();
	box.DrawBox(-1, gPad->GetUymin(), 1, gPad->GetUymax());
	hist->DrawCopy("axissame");
	hist->DrawCopy("same");

	// The axes are drawn perfectly and the hist is only drawn once, so this is more efficient than
	// the methods before. Still the bounding box of the graph is covered by the box and even more
	// important no hist-title is drawn!
	canvas->cd(4);
	hist->DrawCopy("axis");
	gPad->Modified();
	gPad->Update();
	box.DrawBox(-1, gPad->GetUymin(), 1, gPad->GetUymax());
	hist->DrawCopy("axissame");
	hist->DrawCopy("same");

	// So, what would be the best way to draw a region that depends on the range of the axes that
	// is REALLY BEHIND the hist?

}