s="col1"> display</td> <td>display value as a string</td></tr>
  <tr><td style="white-space: nowrap;" class="col1"> plot</td> <td>graphically display the sequence as a robot</td></tr>
  <tr><td style="white-space: nowrap;" class="col1"> teach</td> <td>graphically display as robot and allow user control</td></tr>
</table>
<h2>Conversion methods</h2>
<table class="list">
  <tr><td style="white-space: nowrap;" class="col1"> char</td> <td>convert to string</td></tr>
  <tr><td style="white-space: nowrap;" class=