Kotlin for Forge Mod for Minecraft 1.19.3, 1.19.2, 1.19.1 and 1.19, is a required and mandatory add-on for the use of some Minecraft mods developed by the same creator. Basically, it is a programming language that facilitates the creation of such mods, saving time.
Kotlin for Forge does not modify any Minecraft features, and therefore, its use is only necessary in case you need compatibility with other mods. That is to say, if this complement is installed alone, it will not be useful at all, and will require at least one other mod to be functional.
The installation of Kotlin for Forge is identical to the rest of Minecraft mods and complements, and as always, it will have to be located in the “mods” folder, inside the famous game location. Sometimes this folder is not always available by default, so its manual creation may be necessary.
Specifically, Kotlin for Forge is not able to add content, but its installation is mandatory for the use of other mods of the same creator (as usual).