local tArgs = { ... }
if #tArgs == 1 then
	wide = tArgs[1]
	mode = "0"
	if wide == "1" or wide == "2" then
		print("wide = ",wide,"x",wide)
		print("mode = ",mode)
	else
	error()
	end
elseif #tArgs == 2 then
	wide = tArgs[1]
	mode = tArgs[2]
	if (wide == "1" or wide == "2") and (mode == "0" or mode == "1") then
		print("wide = ",wide,"x",wide)
		print("mode = ",mode)
	else
		error()
		return
	end
else
	wide="1"
	mode="0"
	print("wide = ",wide,"x",wide)
	print("mode = ",mode)
end

function error()
	print("Usage:")
	print("lumber <wide> <mode>")
	print("wide = 1 (1x1) or 2 (2x2)")
	print("if wide is empty: wide = 1")
	print("mode = 0 or 1")
	print("if mode is empty: mode = 0")
	print("mode only works if wide = 1")
end

if wide == "1" then
	turtle.dig()
	turtle.forward()
	z=0
	repeat
	  turtle.digUp()
	  turtle.up()
	  if mode == "1" then
		for i=1,4 do
			turtle.dig()
			turtle.turnRight()
		end
	  end
	  z=z+1
	until turtle.detectUp()==false

	for i=1,z do
	  turtle.digDown()
	  turtle.down()
	end

	turtle.back()	

elseif wide == "2" then

	turtle.dig()
	turtle.forward()
	z=0
	  turtle.dig()
	repeat
	  turtle.digUp()
	  turtle.up()
	  turtle.dig()
	  z=z+1
	until turtle.detectUp()==false
	 
	turtle.turnRight()
	turtle.dig()
	turtle.forward()
	turtle.turnLeft()
	 
	turtle.dig()
	 
	for i=1,z do
	  turtle.digDown()
	  turtle.down()
	  turtle.dig()
	end
	 
	turtle.turnLeft()
	turtle.forward()
	turtle.turnLeft()
	turtle.forward()
	turtle.turnRight()
	turtle.turnRight()

end