  For any near-threshold asymptotic regime and for any Feynman diagram
(involving loop and/or phase space integrals), a systematic prescription for
explicitly constructing all-logs, all-powers (all-twists) expansions in
perfectly factorized form with explicit integrals for coefficients, is
presented. The distribution-theoretic nature of the method of asymptotic
operation employed allows treatment of totally exclusive phase space in the
same manner as loop integrals.
