  We study the high-temperature properties of the Z(3) interface which forms
between the various ordered phases of pure SU(3) gauge theory above a critical
temperature. On a (2+1)-D Euclidean lattice, we perform an accurate measurement
of the interface tension, which shows good agreement with the prediction of
perturbation theory. We also examine the behaviour of the Debye electric
screening mass, and compare this with theoretical predictions.
