sp;text=<span class=io>sprintf</span>(<span class=quotes>'iteration&nbsp;t=0&nbsp;'</span>);<br>
&nbsp;&nbsp;&nbsp;<span class=graph>set</span>(h.txsteps,<span class=quotes>'String'</span>,text);<br>
<br>
&nbsp;&nbsp;&nbsp;<span class=comment>%&nbsp;hide&nbsp;ellipse</span><br>
&nbsp;&nbsp;&nbsp;<span class=keyword>if</span>&nbsp;h.ellipse.handler==-1,<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;h.ellipse.handler=<span class=graph>plot</span>([0],[0],...<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp