  This report is a historical review of the salient results in low energy
antiproton-proton and antineutron-proton annihilation obtained at the Low
Energy Antiproton Ring (LEAR), which was operated at CERN between 1983 and
1996. The intention is to provide guidelines for future experiments at the CERN
AD/ELENA complex and elsewhere. In the spirit of this workshop, hadron
spectroscopy - one of the cornerstones at LEAR - is briefly mentioned, while
emphasis is put on the annihilation mechanism on one and two nucleons, the
final state multiplicity distributions and the contributions from quarks, in
particular in annihilation channels involving strangeness.
