LT1 BIN tuning discussion

I compare stock BIN with tuned. Not everything is clear. Need explanations.
95 trans am Jet perfomance Stage2 bin vs factory 94 TA 2.73 auto
Jet Perfomance seems to be used on a stock car (light mods like T-stat, air filter, cat, etc.)
Both bins are attached
If somebody could explain, what every mod do and how it influence on a car then it would be a good learning for further tuning of any car for everybody
I know that there are comments for lots of parameters in XDF file but...
Here are some mods hard to understand for me:

1.Knock retard enable collant temp - set to lowest value. Why?
2.Vss diagnostic enable min rpm - lowered
3.Stall saver enabled - what for?
4.DFCO lots of changes

6.Main Spark Advance (400-4000RPM) - how to understand that the values are enough or not?
7. IDLE - raised
8. IAC

11.TCC Normal Mode Release MPH Vs. Gear Vs. %TPS
12.TCC Normal Mode Engage MPH Vs. Gear Vs. %TPS
13.Main Line Pressure 0 - 64 MPH
14.Main Line Pressure 64 - 128 MPH
15.Main Line Pressure Modifier Vs. Current Gear
16.Down Shift Pressure Modifier 3 -> 2 Vs MPH

18.* BLM Cell - RPM Boundaries

20.IAC Adder - Vehicle Speed
21.Line Pressure Offset Vs. %TPS (Normal Mode)
22.Line Pressure Offset Vs. %TPS (Performance Mode)
23.Stall Saver Spark Mod
24.Spark Coolant Temp Correction

26.Force Motor Current (ma.) Vs Press Vs Trans Temp (- Change)
27.Force Motor Current (ma.) Vs Press Vs Trans Temp (+ Change)
28.Manual Mode Up/Down Shift Points (is it instant shifting to selected gear, even when the car is not in motion. in JET.bin ) and if so-why?
29.Line Pressure Offset Vs. %TPS (Manual Mode)
30.Line Pressure Mod (psi) Vs. %TPS Vs. Trans. Temp, 3rd Gear
31.TCC lots of mods
32.O2 Swing Voltage
33.CORRCL Airflow%

Sorry for tons of questions:rolleye:
BTW I will add the answers to this message under the questions. It would be smth like FAQ