cmd_terrain

command: /terrain

quick ref:

/terrain -[r|remove|hole|repair|info|show|hide] [block_radius]

description:

make or repair a terrain hole around a block radius (default to 256) of the current player position
/terrain -[remove|hole|r] 256
/terrain -repair 256    repair terrain hole
/terrain -show  show global terrain 
/terrain -hide  hide global terrain 
/terrain -info  query information about the terrain tile