At HERA, the electron-proton collider at DESY, Hamburg, the large flux of
almost on-shell photons accompanying the lepton beam is being used to shed new
light on the structure of the photon. Recent results are reviewed and
discussed, with emphasis on those aspects of the photon's nature which should
be understandable using perturbative QCD.Comment: 20 pages, latex, 10 figures appended as uuencoded file. Full
postscript version including figures available at
http://zow00.desy.de:8000/~butterwo/pubs.html#ke
