set values of parameters. </p>

</div>
</div>
<a id="a2197acd436dd50dc315aec635f97e2c3" name="a2197acd436dd50dc315aec635f97e2c3"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a2197acd436dd50dc315aec635f97e2c3">&#9670;&#160;</a></span>user_interface()</h2>

<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">void user_interface </td>
          <td>(</td>
          <td class="paramtype">void</td>          <td class="paramname"><sp