What is Fwatch?
Fwatch is a program extending Operation Flashpoint's scripting functionality.
It creates a hook on file operations. When the game attempts to open file with a special name Fwatch takes over. It's able to perform a variety of operations (like reading/writing text files, string manipulation, utilizing WINAPI) and send results back to the game.
It was created by Kegetys in 2005. This project (which started in the late 2010) is a continuation. It features 98 new commands, compatibility with 1.99 and has several old issues fixed.