Multiecuscan

Hi,
I own a Grande Punto 1.4 16v turbo, and I'm just curious about how STFL and LTFL are working...

Unlike generic softwares that have literally "Short term fuel trim" and "Long term fuel trim" parameters, I couldn't find them on FES.
I found something similar...

I'm talking about four parameters:
-Lambda sensor 1 integrator
-Adaptation Bank1 (mul) (FRA Factor - Current Load)
-Adaptation Bank1 (add) (DTV Factor 1)
-Adaptation Bank1 (add) (DTV Factor 2)

is it right?
How they work?

Because they are not just a percentage of something.....i believe.

- must be used software Scan Master, Scan XL with ELM327 to read short or long par. by PID.