tr><td style="white-space: nowrap;" class="col1"> 'yes'</td> <td>sets opt.select := (the second element)</td></tr>
</table>
<p>
and can be given in any combination.

</p>
<p>
If neither of 'this', 'that' or 'other' are specified then opt.choose := 'this'.
Alternatively if:

</p>
<pre style="width: 90%%;" class="examples">
opt.choose&nbsp;=&nbsp;{[],&nbsp;'this',&nbsp;'that',&nbsp;'other'};
</pre>
<p>
then if neither of 'this', 'that' or 'other' are specified then opt.choose := []

</p>
<p>
If neither of 'no