Commands

/world
/world properties
/world create
/world remove
/world regen
/world difficulty
/world setspawn
/world keepspawnloaded	
/world hardcore	
/world list
/world teleport
/world gamerule
/world unload
/world load
/world import
/world rename
/world copy
/world time
/world weather
/world loadonstartup
/world usemapfeatures
/world modifier 
/world border
   /world border center
   /world border damage
   /world border diameter
   /world border generate
   /world border warning
   /world border info