This is a Unicode (UTF-8) character set. It allows Geeklog user to switch between German and other Unicode (UTF-8) translations, especially Asian language translations, without losing the readability of the existing stories.
This is polish translation for File Mgmt Plugin 1.2 Just copy lang.php from tar.gz archive over your original language file located in /path/to/geeklog/plugins/filemgmt/ directory.