protected String findOptionalString(Modifiable E, List<String> ignoreStats, String defPrefix, String tagName, XMLTag piece, Map<String,Object> defined, boolean debug) throws PostProcessException
	{
		try
		{
			return findString(E,ignoreStats,defPrefix,tagName, piece, defined);
		}
		catch(final CMException x)
		{
			if(debug)
				Log.errOut(x);
			return null;
		}
	}