The first console-only installment in the award-winning Call of Duty series, Call of Duty: Finest Hour takes players to the frontlines of combat to experience the cinematic intensity, chaos of battle and epic moments of WWII. Call of Duty: Finest Hour features all-new combat missions, intense squad-based combat and cinematic special effects - delivering a breathtaking first person action gaming experience.
It is a GSC script preprocessor for modders, for every Call of Duty which are using GSCs. A full description can be found here: moddb.com/tutorials/pregsc
This tool lets you use some language elements, which are missing from GSC. For this, you have to work in a source folder, and the program will transform the code to proper GSC in another directory. It's also very good for compressing your scripts as much as possible.