Provided in PR pkg/19456 by Michael Santos <mike at ethmoid dot org>, slighty
edited by me.
Cfengine, or the "configuration engine" is a very high level language
for building expert systems which administrate and configure large
computer networks. Cfengine uses the idea of classes and a primitive
form of intelligence to define and automate the configuration of
large systems in the most economical way possible. Cfengine is
designed to be a part of computer immune system