	<p>
					The OK02 lesson builds on OK01, by causing the 'OK' or 'ACT' LED to turn on and off repeatedly.
					It is assumed you have the code for the <a href="ok01.html">Lesson 1: OK01</a> operating
					system as a basis.
				</p>
				<div class="ucampas-toc">
				</div>
				<h2 id="waiting">
					1 Waiting</h2>
				<p>
					Waiting is a surprisingly useful part of Operating System development. Often Operating
					Systems find themselves with nothing to do, and must delay. In this example, we
