And when will the newer version come out?

Thank you very much.

The game is written in C++.

They created their own "scripting" format for missions called MFK/CON. Which I believe is actually called "Console" internally because it is effectively a terminal command, one after the other.

Thank you.

I have a some more questions.
What do the following terms mean?

"SetNormalSteering"
"SetSlipSteering"
"SetSlipSteeringNoEBrake"
"SetSlipEffectNoEBrake"

"SetCMOffsetX(0.0)"
"SetCMOffsetY(0.2)"
"SetCMOffsetZ(0.2)"

"SetBurnoutRange(0.2)"
"SetMaxSpeedBurstTime(2.0)"
"SetDonutTorque(5.0)"

Thank you very much.

Forced vehicle/"forced car" missions are missions in which the player is forced to use a specific vehicle during the mission (such as Level 2-Mission 5: Better Than Beef, which forces use of the Pickup Truck). Usually, there will be a timer if the player exits/destroys the vehicle which fails the mission if it runs out and some other minor precautions during these missions. The command itself is what removes Phone Booths from the map/makes them unfunctional for the duration of the mission as far as I know.