Appears to have been a way to change the steering handling? "Original Controls", "Accelerated steering", "0.75 Accelerated", "0.5 Accelerated", "New controls". The game is hardcoded to use "0.5 Accelerated" and this function is not called from anywhere.
Not accessible in the retail game, but the functions still exists. Can be invoked in a very early demo build. For each of 7 fonts, it prints 15 lines of dummy text and saves a screenshot each time.
Does a return at the top of the function in the retail game. Appears to have been used for debugging. Replaces the current car model with an arrow(?). Also enables debug output showing the car location and stats.
TBA
Reads DEMOFILE.TXT which lists a number of .CNT files. Each .CNT file appears to contain a number of full-screen background images which are displayed as a slideshow. Sound ID 10000 is played during the slideshow.