private RegularExpression readRE(File file) {
		String rstring = ""; // If nothing found, RE is blank.
		try {
			BufferedReader reader = new BufferedReader(new FileReader(file));
			String line = null;
			while ((line = reader.readLine()) != null) {
				line = line.trim();
				if (line.startsWith("#"))
					continue;
				if (line.length() == 0)
					continue;
				rstring = line;
			}
		} catch (FileNotFoundException e) {
			throw new ParseException("Could not find file " + file.getName()
					+ "!");
		} catch (IOException e) {
			throw new ParseException("Error accessing file to write!");
		}
		return new RegularExpression(rstring);
	}