  We discuss the status of the pion distribution amplitude (DA) from analyzing
the CLEO experimental data in the context of QCD sum-rule techniques and QCD
perturbation theory at the NLO accuracy. The constraints extracted this way for
the Gegenbauer coefficients a_2 and a_4 exclude \Phi_{CZ} at the 4\sigma level,
while \Phi_{asy} is outside the 3\sigma error ellipse. These data provide
strong support for the type of endpoint-suppressed, double-humped pion DA we
derived via QCD sum rules with nonlocal condensates and favor a value of the
vacuum quark virtuality \lambda_q^2 \simeq 0.4 GeV^2. This pion DA is in
agreement with the E791 data, though these experimental results should be
viewed carefully and further confirmation is necessary for a more accurate
judging of pion DAs from them.
