public int[] start() {
		return start.value.clone();
	}
Return the first element according its <em>natural</em> order.
<p>
<b>First element of KSubset[n=20, k=8]</b>
<pre>
[0, 1, 2, 3, 4, 5, 6, 7]
</pre>

@return the first element
jenetics.incubator/src/main/java/io/jenetics/incubator/combinatorial/KSubset.java