l'</span>);              <span style="font-style: italic;">% fourth axis</span><br>&gt;&gt; <span style="color: rgb(51, 102, 255);">label</span>(a, rank, <span style="color: rgb(204, 51, 204);">'a new axis label for rank'</span>);  <span style="font-style: italic;">% any axis of given rank=1, 2, 3, ..., 0 for signal</span><br></pre>
All of these will be shown upon call to <span style="font-style: italic;">plot(a)</span>. The values can be obtained
with e.g<br>
<pre style="margin-left: 40px;">&gt;&gt; <span 