  The program BABAYAGA is an event generator for QED processes at flavour
factories, mainly intended for luminosity measurement of e+ e- colliders in the
center of mass range 1-10 GeV. Recently, the pi+ pi- channel has been added as
well. The relevant (photonic) radiative corrections are simulated by means of a
Parton Shower in QED. The theoretical precision of the approach is estimated
and some phenomenological results are discussed.
