console.x read/write property
The console.x property gets or sets the current cursor column position.
Example
local console = require "console"
console.clear()
local message = "Hello World !"
console.color = "lightyellow"
console.y = math.floor(console.height/2)
for x = 1,console.width-message:len() do
console.x = x-1
console.write(string.rep(" ", message:len()))
console.x = x
console.write(message)
sys.sleep(1)
end