code: public JScoreElement getRenditionObjectFor(MusicElementReference ref) {
  		//fast way
  		JScoreElement jse = (JScoreElement) m_scoreElements.get(ref);
  		if (jse == null) {
  			//if null, search comparing ref with all keys
  			//System.out.println("Can't find "+ref+", compare keys");
  			Enumeration e = m_scoreElements.keys();
  			while (e.hasMoreElements()) {
  				MusicElementReference mer = (MusicElementReference) e.nextElement();
  				if (ref.equals(mer)) {
  					jse = (JScoreElement) m_scoreElements.get(mer);
  					//System.out.println("found!");
  					break;
  				}
  			}
  		}
  		return jse;
  	}
docs: Returns the rendition object (JNote, JChord...) for
  the given music element reference