rer = new AWTRenderer();
 FOUserAgent agent = fopFactory.newFOUserAgent();
 agent.setRendererOverride(renderer);
 renderer.setPreviewDialogDisplayed(false);
 renderer.setUserAgent(agent);
 renderer.setUserAgent(agent);
 previewPanel = new PreviewPanel(agent, null, renderer);
 previewPanel = new PreviewPanel(ua);
 myGui.add(previewPanel);
 </pre>

 In order to set options and display a page do:
 <pre>
 renderer.clearViewportList();
 // build report xml here
 reload(); // optional if setting changed
 </pre>

