Modified rule 9:
9. Altering Gameplay to your advantage
Anything that helps you play the game to your advantage is not allowed. This includes client mods and external programs that allow you to perform actions that are not possible within the vanilla experience. Examples of this include x-ray mods, auto clickers, fast clickers, speedhacks, waypoint mods, and illegal block placement hacks just to name a few. Client mods that enhance the UI are ok, like Rei's minimap, HD textures, lighting fixes, etc. Texture packs are fine with the exception of xray.
There is an exception to fast clickers such that you may use mods that can arrange your inventory.
But waypoint mods too? ._. so no rei's minimap or similar?
This rule allows rei's minimap, but waypoint mods are forbidden, because they technically teleport the player around, but this should already be prevented.