|See P. Putnik's site for adapted versions for hardware like HxC Floppy Emulator, Atari harddisk, TT, Falcon030 and more: The Atari ST Game Archive
Lotus III - The Ultimate Challenge introduced a new RECS system (Racing Environment Construction Set).
It was based on a percentual system, where user could input values for example how much there are curves, how deep the hills are, scenery, race type (point to point or lap) etc. rather than designing everything from scratch.
When user is happy with the track, RECS system gives a 12-letter code. These codes can be arranged to create championship with up to 9 races.
If you write down the code from one of the many track loader screens, you can input the code to RECS and re-create track for practicing or manipulate it.