Bug 88724 Provide 'since' javadoc in snippets
It would be a useful additional information in some snippets if there were an @since javadoc tag that tells from which version on the snippet will work. For instance, snippet 175 works only from Eclipse 3.1 on, since it uses the GridData.exclude field which was introduced in 3.1
examples/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet173.java
shell.setText("Main Window");
	shell.setLayout(new FillLayout());
	Browser browser = new Browser(shell, SWT.NONE);
	initialize(display, browser);
	shell.open();
	
	browser.setUrl("http://www.cnn.com");
	while (!shell.isDisposed()) {
		if (!display.readAndDispatch())
			display.sleep();
		}
		display.dispose();
	}
static void initialize(final Display display, Browser browser) {
	browser.addOpenWindowListener(new OpenWindowListener() {
		public void open(WindowEvent event) {
			Shell shell = new Shell(display);
			shell.setText("New Window");
			shell.setLayout(new FillLayout());
			Browser browser = new Browser(shell, SWT.NONE);
			initialize(display, browser);
			event.browser = browser;
		}
	});
	browser.addVisibilityWindowListener(new VisibilityWindowListener() {
		public void hide(WindowEvent event) {
			Browser browser = (Browser)event.widget;
			Shell shell = browser.getShell();
			shell.setVisible(false);
		}