Put the mod inside your mod folder, when you are near a village (200 blocks away from the border of village or closer) hit the V key (Configurable) then you can use combination of control key + numbers from 1 - 9 (Configurable) to toggle different info display and options. I hope you enjoy this mod.
You can get information about spawn chunks by hitting C key (configurable) and chunk border for the chunk you are in with F6 now.
When you start showing information, every 6 seconds, the server will find every village that is considered close by, then it will draw information for every one of those villages in one go. It is really useful for making your own Iron farm design or villager breeding system.
MOD PACKS : Feel free to use my mod in any mod pack you want, you don't need to ask for permission, have fun with it