public function rewind()
	{
		// open file with reader
		// force UTF-8, validate XML, & substitute entities while reading
		$this->reader->open($this->file, 'UTF-8', XMLReader::VALIDATE | XMLReader::SUBST_ENTITIES);

		// fast forward to first record
		while ($this->reader->read() && $this->reader->name !== $this->key)
		{
			// Do nothing...
		}
	}