code: public boolean needsRefreshing() {
  		// is there a new version available?
  		long lastmodified = new File(pathResourceDirectory,
  				Parameters.lexiconName).lastModified();
  		boolean needsRefreshing = false;
  		if (lastmodifiedLexicon != lastmodified) {
  			needsRefreshing = true;
  		}
  		return needsRefreshing;
  	}
docs: Returns true if a new model/lexicon has been generated since the last
  loading*