  A simple method is used to extrapolate the form factor for the process gamma*
gamma *--->pi^0 when two virtual photons produce a pi ^0 from the region of
large spacelike photon virtualities to the experimentally accessible case when
one of the photons is real. The method is also applied to the study of the
axial anomaly and omega -rho -pi coupling and to the pion charge and charge
radius. The results compare favourably with the experimental measurements.
