For the two examples in this chapter,
the problem dependent files **uspec.f** and **start.dat**
are already prepared in the subdirectories
`pendulum` and `minenergy` of the directory of the examples.

The underlying mathematical formulation of both problems is described briefly in the sequel.

The two problems have been selected for the purpose of demonstration. More sophisticated problems and results obtained using PAREST can be found in [1] and [2].

Tue Feb 1 13:50:42 CET 2000