  We present and discuss the two-generator framework of nonequilibrium
thermodynamics known as GENERIC ("general equation for the nonequilibrium
reversible-irreversible coupling"), which is based on geometric concepts and on
statistical mechanics. The usefulness and maturity of the framework are
illustrated by reviewing a large number of successful applications. Finally, we
offer an important challenge for the future.
  This abstract is based on the compact reviews [1;2] presenting modern
nonequilibrium thermodynamics to applied scientists and engineers. In the
spirit of a continuation of these reviews, we here add some new developments of
the last five years.
