  The deep inelastic scattering cross section in the endpoint region, $x \sim
1$, has been subjected to extensive analysis. We revisit this process, and show
that in the endpoint individual factors in the factorized hadronic tensor have
rapidity divergences. We regulate these divergences using a recently introduced
rapidity regulator, and find that each factor requires a different scale to
minimize large rapidity logarithms. Interestingly, in this case running in
rapidity is non-perturbative. In addition, we give an operator definition of
the parton distribution function in the endpoint region, and remark on the
issues that should be considered in constructing this function.
