  We summarise the main features of VINCIA's antenna-based treatment of QCD
initial- and final-state showers, which includes iterated tree-level
matrix-element corrections and automated evaluations of perturbative shower
uncertainties. The latter are computed on the fly and are cast as a set of
alternative weights for each generated event. The resulting algorithm has been
made publicly available as a plug-in to the PYTHIA 8 event generator.
