About command
Locate a given biome and give output in format x ~ z. Search radius can be adjusted in config file. Search is done by Forge worker.
Command use raw biome registry name. But it accept modded biomes (if you use big generator mod that has many biomes "/locatebiome list" can become useless because chat in Minecraft has limited space). Also it use names without spaces because space is argument separator. Space is simply removed from a name when biome name is retrieved from registry and it convert biome name to UppercaseCammelFont.
Note: RoofedForest = Dark oak forest (strange registry name in Minecraft) ;)