Languages and menus · RoodyMines · Documentation

language in config.yml: the file of lang/ the server speaks (en, es, or your own: copy one as lang/<code>.yml).
per-player-language: true: each player gets messages, menus and bars in their Minecraft language when lang/ has it. Holograms and the console use the server language.
The lang file has every message, the menus' titles, names and lores, the hologram lines and bars (hologram.lines, bar.*) and the {state} text of each mode (states.*).
menus/<menu>.yml: where each button goes and with which item (slot, material, glow, custom-model-data, item-model, sound), rows, filler, click sound, and your own items (decoration, or buttons that run [player]/[console] commands, send a [message], play a [sound] or [close]). New buttons of a new version are added by themselves.