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/Snippet138.java
gc = new GC(large);
		gc.setBackground(display.getSystemColor(SWT.COLOR_RED));
		gc.fillArc(0, 0, 32, 32, 45, 270);
		gc.dispose();
		
		/* Provide different resolutions for icons to get
		 * high quality rendering wherever the OS needs 
		 * large icons. For example, the ALT+TAB window 
		 * on certain systems uses a larger icon.
		 */
		Shell shell = new Shell(display);
		shell.setText("Small and Large icons");
		shell.setImages(new Image[] {small, large});
		/* No large icon: the OS will scale up the
		 * small icon when it needs a large one.
		 */
		Shell shell2 = new Shell(display);
		shell2.setText("Small icon");
		shell2.setImage(small);
		
		shell.open();
		shell2.open();
		while (!shell.isDisposed()) {
			if (!display.readAndDispatch())
				display.sleep();
		}
		display.dispose();
	}
}