Detail
Type Ml. - Unterheckenmühle is a Mühle (Mill).
Kr Fulda - The Kreis for Unterheckenmühle is Fulda. A Kreis is a government district (similar to a U.S. county).
See Hosenfeld - A See notation means the entry is dependent on another entry. In this case, Unterheckenmühle is dependent on Hosenfeld, which should be consulted for additional information.