e)</td></tr>
  <tr><td style="white-space: nowrap;" class="col1"> 'verbose=4'</td> <td>sets opt.verbose := 4 (ridiculously verbose)</td></tr>
  <tr><td style="white-space: nowrap;" class="col1">'debug',  N</td> <td>sets opt.debug := N</td></tr>
  <tr><td style="white-space: nowrap;" class="col1"> 'showopt'</td> <td>displays opt and arglist</td></tr>
  <tr><td style="white-space: nowrap;" class="col1">'setopt', S</td> <td>sets opt := S, if S.foo=4, and opt.foo is present, then
opt.foo is set to 4.</td></tr>
