    
          </span>
          
            &mdash; <div class='inline'>
<p>the column spacing in twips (can also be a string, see
<span class='object_link'><a href="Utilities.html#value2twips-class_method" title="RRTF::Utilities.value2twips (method)">Utilities.value2twips</a></span>).</p>
</div>
          
        </li>
      
        <li>
          <span class="name">"mirror_margins"</span>
          <span class="type">(<tt>Boolean</tt>)</span>
          <span class="default">
            
             