// Adding another pattern selection button:
// In Class GraphDialogSetup, find the inner class
// private class SetupListener implements ActionListener {
// and scroll down the method public void actionPerformed(ActionEvent arg0)
// Immediately BEFORE setupDialog.pack(); put the code for the new button:

// choose different names for the new button name, different text for the button
// and all the associated method in CellGrid

			JButton theNewButtonName = new JButton("The New Button Text");
			theNewButtonName.addActionListener(e -> {
				cellGrid.theNewButtonCode();
				setupDialog.dispose();
				graph.repaint();
			});
			setupDialog.add(theNewButtonName);