Detail
Type Hrgr. - Arkona is a Häusergruppe (Group of Houses).
Kr Rügen - The Kreis for Arkona is Rügen. A Kreis is a government district (similar to a U.S. county).
See Puttgarten - A See notation means the entry is dependent on another entry. In this case, Arkona is dependent on Puttgarten, which should be consulted for additional information.