JESS: Jess Functions

[Anitha P -X (anitp - WIPRO at Cisco)]

Hi All,
 
I am a new Jess user and I want to know whether we have some functions
for the following
## to know the active facts
## rules firing (Can we count the times a rule has fired?  Measure the
time a rule took to run?)
## internal expressions generated for matching (Could a rule be firing
that generates so many facts/possibilities that it overflows the
system?)
 
Thanks in Advance,
 
Regards,
Anitha