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/Snippet135.java
public String getColumnName (int col) {
			return columnsName[col];
		}
	}
	public static void main(String[] args) {
		final Display display = new Display();
		final Shell shell = new Shell(display);
		shell.setText("SWT and Swing/AWT Example");
		Listener exitListener = new Listener() {
			public void handleEvent(Event e) {
				MessageBox dialog = new MessageBox(shell, SWT.OK | SWT.CANCEL | SWT.ICON_QUESTION);
				dialog.setText("Question");
				dialog.setMessage("Exit?");
				if (e.type == SWT.Close) e.doit = false;
				if (dialog.open() != SWT.OK) return;
				shell.dispose();
			}
		};	
		Listener aboutListener = new Listener() {
			public void handleEvent(Event e) {
				final Shell s = new Shell(shell, SWT.DIALOG_TRIM | SWT.APPLICATION_MODAL);
				s.setText("About");
				GridLayout layout = new GridLayout(1, false);
				layout.verticalSpacing = 20;
				layout.marginHeight = layout.marginWidth = 10;
				s.setLayout(layout);
				Label label = new Label(s, SWT.NONE);
				label.setText("SWT and AWT Example.");
				Button button = new Button(s, SWT.PUSH);
				button.setText("OK");