ComputerCraft Stairs Cleanup Turtle Program

-- This program is no longer needed. Just grab the stairs program below.
-- place at the top most face block after you run ComputerCraft Stair Turtle Program
-- pastebin get t6kdBeq0 stairs

local tArgs = { ... }

if #tArgs ~= 1 then
    print( "Usage: cleanupstairs <amount>" )
    return
end

local amount = tonumber(tArgs[1])
local back = amount + 1

local torch = 15-- put number of torch slot

for i = 1, amount do
        while not turtle.detectDown() do
            turtle.dig()
            turtle.down()
            turtle.forward()
        end
end

sleep(2)
turtle.up()
sleep(2)
turtle.turnRight()
sleep(2)
turtle.turnRight()
sleep(2)

for i = 1, back do
    turtle.up()
    turtle.forward()
    turtle.up()
end