Detail
Type D. - Hackenberg is a Dorf (Village).
Kr Gummersbach - The Kreis for Hackenberg is Gummersbach. A Kreis is a government district (similar to a U.S. county).
See Bergneustadt - A See notation means the entry is dependent on another entry. In this case, Hackenberg is dependent on Bergneustadt, which should be consulted for additional information.