  Deep-inelastic positron-proton scattering events at low photon virtuality Q^2
with a forward jet, produced at small angles with respect to the proton beam,
are measured with the H1 detector at HERA. A subsample of events with an
additional jet in the central region is also studied. For both samples
differential cross sections and normalised distributions are measured as a
function of the azimuthal angle difference, Delta phi, between the forward jet
and the scattered positron. The sensitivity to QCD evolution mechanisms is
tested by comparing the data to predictions of Monte Carlo generators based on
different evolution approaches as well as to next-to-leading order
calculations.
