despawnItemByBox

--Remove all dropped items in the specified area
--The first three parameters are the coordinates of the starting point of the area
--The last three parameters are the coordinates of the end point of the area
World:despawnItemByBox(-20,0,-20,20,50,20)
--Display in the chat box
Chat:sendSystemMsg("Removed all dropped items in the area from (-20,0,-20) to (20,50,20)")