  Within the Landau-Ginzburg-Wilson approach we derive the effective
Hamiltonian governing fluctuations of an interface between two phases, one of
them adsorbed on a disclike substrate. For large disc radii and for
temperatures close to the wetting temperature of the corresponding planar
substrate the expressions for the hight-hight correlation function and the
accompanying correlation angle are derived. Their dependence on the disc radius
and the reduced temperature is discussed and the relevant scaling regimes are
identified.
