code: public void listDict(PdfDictionary dictionary)
      {
          out.println("<<");
          PdfName key;
          PdfObject value;
          for (Iterator i = dictionary.getKeys().iterator(); i.hasNext(); ) {
              key = (PdfName) i.next();
              value = dictionary.get(key);
              out.print(key.toString());
              out.print(' ');
              listAnyObject(value);
          }
          out.println(">>");
      }
docs: Visualizes a PdfDictionary object.
  @param dictionary	a com.lowagie.text.pdf.PdfDictionary object