Inno Setup Script Includes is a library of functions that can be implemented very easily into your existing setups build with Jordan Russell's Inno Setup. In the past adding some customization to Jordan Russell's Inno Setup one had to look for pieces of code and implement them into their own script. Now with this new generation of ISSI it's possible to add prefab functionality to Inno with just a few lines of code. These includes use the basic include functionality to quickly add and remove various customization. This is a great advantage to manually incorporating the desired customization into each script. This is not only useful for new users of Inno Setup, also experienced users might find it useful to be able to quickly implement some functionality in various scripts without much of a hassle. Some might even be inspired to create their own library of frequently used functions.