[Zope] odd batch processing behaviour

[Jeff Sacksteder]

I am trying to modify a dtml search results page and I am getting unexpected
behaviour. I edited the results of a 'z search interface' to produce the
following:

dtml-in list_jobs start=query_start>
   <dtml-if sequence-start>
      <table border>
        <tr>
          <th>ORDER NO</th>
          <th>CUSTOMER</th>
          <th>PART</th>
          <th>QTY ORDERED</th>
        </tr>
   </dtml-if sequence-start>
        <tr>
          <td><dtml-var ORDER_NO null=""></td>
          <td><dtml-var CUSTOMER null=""></td>
          <td><dtml-var PART null=""></td>
          <td><dtml-var QTY_ORDERED null=""></td>
        </tr>
   <dtml-if sequence-end>
      </table>
   </dtml-if sequence-end>
<dtml-else>


Problem is I only get 7 results back when I leave out the "size=" option. I
want ALL results to be returned. If I set size=500, it works fine. Yes, I
can work around it, but I want to understand why this happens.