<td style="white-space: nowrap;" class="col1"> 'foo'</td> <td>sets opt.foo := true</td></tr>
  <tr><td style="white-space: nowrap;" class="col1"> 'nobar'</td> <td>sets opt.foo := false</td></tr>
  <tr><td style="white-space: nowrap;" class="col1">'blah',  3</td> <td>sets opt.blah := 3</td></tr>
  <tr><td style="white-space: nowrap;" class="col1">'blah', {x,y}</td> <td>sets opt.blah := {x,y}</td></tr>
  <tr><td style="white-space: nowrap;" class="col1"> 'that'</td> <td>sets opt.choose := 'that'</td></tr>
  <