  This document describes the first proof-of-concept version of the Pythia7
program.
  Pythia7 is a complete re-write of the Pythia program in C++. It is mainly
intended to be a replacement for the `Lund' family of event generators, but is
also a toolkit with a structure suitable for implementing any event generator
model.
  In this document, the structure of the program is presented both from the
user and the developer point of view. It is not intended to be a complete
manual, but together with the documentation provided in the distribution, it
should be sufficient to start working with the program.
