code: public float getDefaultTextSize() {
  		ScoreAttribute.Size s = (ScoreAttribute.Size)
  			getAttributeObject(ScoreAttribute.TEXT_DEFAULT_SIZE);
  		if (s.getUnit().equals(SizeUnit.PT))
  			return s.getSize();
  		else {
  			//% of notation size
  			return (s.getSize()/100f)
  				* getAttributeSize(ScoreAttribute.NOTATION_SIZE);
  		}
  	}
docs: Returns the default text size in pt.
  
  if text size is expressed in percent, all font sizes will be calculated
  from default font size.