code: public boolean setMarginMirroring(boolean marginMirroring) {
          this.marginMirroring = marginMirroring;
          DocListener listener;
  		for (Iterator iterator = listeners.iterator(); iterator.hasNext();) {
              listener = (DocListener) iterator.next();
              listener.setMarginMirroring(marginMirroring);
          }
          return true;
      }
docs: Set the margin mirroring. It will mirror right/left margins for odd/even pages.
  <p>
  Note: it will not work with {@link Table}.
  
  @param marginMirroring
  <CODE>true</CODE> to mirror the margins
  @return always <CODE>true</CODE>