  The properties of the coexisting bulk gas and liquid phases of a polydisperse
fluid depend not only on the prevailing temperature, but also on the overall
parent density. As a result, a polydisperse fluid near a wall will exhibit
density-driven wetting transitions inside the coexistence region. We propose a
likely topology for the wetting phase diagram, which we test using Monte Carlo
simulations of a model polydisperse fluid at an attractive wall, tracing the
wetting line inside the cloud curve and identifying the relationship to
prewetting.
