-- First we wrap the monitor peripheral
local monitor = peripheral.find("monitor")

monitor.setCursorPos(10,10)
-- Let's clear the monitor
local num = 1
while num < 10000 do
    monitor.setTextColor(num)
    num = num + 1
    monitor.clear()

-- And reset the cursor position
    monitor.setCursorPos(1,1)

-- Then we can write whatever we want
    monitor.write("Hello, World")
end