private function _checkReplacements($text) {
		if ($this->_isActive('checkReplacements')) {
			$key = strtolower($text);
			if (array_key_exists($key, $this->_replacements)) {
				$msg = $this->_getMessage('REPLACED', $this->_replacements[$key]['old'], $this->_replacements[$key]['new']);
				$this->_writeError('checkReplacements', $msg);
			}
		}
	}