  We show that if a L\'evy process creeps then, as a function of $u$, the
renewal function $V(t,u)$ of the bivariate ascending ladder process
$(L^{-1},H)$ is absolutely continuous on $[0,\infty)$ and left differentiable
on $(0,\infty)$, and the left derivative at $u$ is proportional to the
(improper) distribution function of the time at which the process creeps over
level $u$, where the constant of proportionality is $\rmd_H^{-1}$, the
reciprocal of the (positive) drift of $H$. This yields the (missing) term due
to creeping in the recent quintuple law of Doney and Kyprianou (2006). As an
application, we derive a Laplace transform identity which generalises the
second factorization identity. We also relate Doney and Kyprianou's extension
of Vigon's \'equation amicale invers\'ee to creeping. Some results concerning
the ladder process of $X$, including the second factorization identity,
continue to hold for a general bivariate subordinator, and are given in this
generality.
