And for Fallout gamers, needless to say, this functionality is necessary for game scripts. Besides, F4SE is an application that usually works like a community for Fallout gamers to extend the time of scripts. Just as you can see from its name, Fallout 4 Script Extender, which can be shortened as F4SE or FOSE, is used to enhance Fallout’s capabilities of scripting. What is Fallout 4 Script Extender? What is the F4SE Issue?