  This is the manual of the specialized event generator TopReX 3.25. The
generator provides the simulation of several important processes in pp and p
pbar collisions, not implemented in PYTHIA (yet). Some of these processes
include t-quarks whose spin polarizations are taken into account in the
subsequent decay of the t-quarks. Several non-SM top quark decay channels are
included, too. All calculated subprocesses can be accessed from PYTHIA as
external processes. In addition, TopReX can be used as stand alone event
generator, providing partonic final states before showering. In this mode the
control of the event generation is taken by TopReX itself. A few simple
examples of main routines, which show how to use TopReX in the different modes
are discussed.
