These files can be used to allow Lua linting tools to understand Wesnoth types and functions that are defined in C++. Documentation of the annotations format can be found [here](https://github.com/sumneko/lua-language-server/wiki/EmmyLua-Annotations). To enable in Visual Studio Code, install [this Lua plugin](https://marketplace.visualstudio.com/items?itemName=sumneko.lua) and add the following settings to your settings.json: ```json "Lua.runtime.version": "Lua 5.4", "Lua.type.weakNilCheck": true, "Lua.type.weakUnionCheck": true, "Lua.workspace.library": [ "./utils/emmylua" ], "Lua.runtime.special": { "wesnoth.require": "require", "wesnoth.dofile": "dofile" }, "Lua.runtime.builtin": { "io": "disable", "debug": "disable", "os": "disable", "package": "disable" }, "Lua.diagnostics.globals": [ "wesnoth", "wml", "gui", "filesystem", "unit_test", "stringx", "mathx", "ai" ] ```