  We will prove that an ordered block permutation (OBP) (a permutation of n
positive integers) when admissible, corresponds to an oriented-fixed (OF)
pseudo-Anosov homeomorphism of a closed Riemann surface (with respect to an
Abelian differential and fixing all critical trajectories); and conversely,
every OF pseudo-Anosov homeomorphism gives rise to an admissible OBP. In
particular, a bounded power of any homeomorphism of an oriented surface (after
possibly having taken a branched double cover) corresponds to an admissible OBP
and is determined by the OBP up to (independent) scaling in the horizontal and
vertical directions, which once fixed, the homeomorphism is determined.
