private void create() {
		mainPanel = new JPanel();
		cardLayout = new CardLayout();
		conflictPanel = new JPanel(cardLayout);

		mainPanel.setLayout(new BorderLayout(0, 10));
		mainPanel.setBorder(BorderFactory.createEmptyBorder(5, 5, 5, 5));
		nameLabel = new GDLabel("Merge Programs", SwingConstants.LEFT);

		JPanel iconPanel = new JPanel();
		new BoxLayout(iconPanel, BoxLayout.X_AXIS);
		iconPanel.add(Box.createHorizontalStrut(5));
		iconPanel.add(new GIconLabel(MERGE_ICON));
		iconPanel.add(Box.createHorizontalStrut(5));
		iconPanel.add(nameLabel);

		JPanel imagePanel = new JPanel(new BorderLayout());
		imagePanel.add(iconPanel, BorderLayout.WEST);

		mainPanel.add(imagePanel, BorderLayout.NORTH);
		mainPanel.add(conflictPanel, BorderLayout.CENTER);

		mainPanel.add(createButtonPanel(), BorderLayout.SOUTH);
		createDefaultPanel();
		cardLayout.show(conflictPanel, DEFAULT_ID);
		Dimension d = conflictPanel.getPreferredSize();
		mainPanel.setPreferredSize(new Dimension(d.width, d.height + 20));
	}
Displays the default information in the merge tool.
Ghidra/Features/Base/src/main/java/ghidra/app/merge/MergeManagerProvider.java