This is an executable file created using windows cmd batch it searches for a specific registry key (install path in this case) to determine your War3 location. Once it determines the location it starts War3.exe with a map file that has been imported inside the .exe. The sole goal of this is to play your single player projects independent from War3. Furthermore you can create custom launchers, intro movies, .exe icon, splash screen and even a main menu that is not a part of War3. It allows people to turn simple maps into something much larger. As a test I've created an example executable that launches Iceborn map by Approject. I need it tested whether it works for other people and if there are any problems with it.