nt>%&nbsp;enable&nbsp;stop&nbsp;button</span><br>
&nbsp;&nbsp;&nbsp;<span class=graph>set</span>(h.btstop,<span class=quotes>'Enable'</span>,<span class=quotes>'on'</span>);<br>
<br>
&nbsp;&nbsp;&nbsp;<span class=comment>%&nbsp;get&nbsp;#&nbsp;of&nbsp;iter&nbsp;and&nbsp;epsilon</span><br>
&nbsp;&nbsp;&nbsp;iter=str2num(<span class=graph>get</span>(h.editer,<span class=quotes>'String'</span>));<br>
&nbsp;&nbsp;&nbsp;epsilon=str2num(<span class=graph>get</span>(h.edeps,<span class=quotes>'String'</span>));<br