Default clause set comparator class that can be used in order to
arrange knowledge in an extended knowledge base automatically.
The following policy is employed:
SQL clause sets have the highest priority.
Facts have the second highest priority. Among facts, the order is managed by
a chain of fact comparators.
Rules have lower priority than facts. Among rules, the order is managed by
a chain of rule comparators.
All other types of clause sets have a lower priority (this rules
can be critical.
author: Jens Dietrich version: 3.4 <7 March 05> since: 2.2