welcome

local tText = {
"First line", -- you can change the lines here
"Second line",
"Some more",
"lines here"
-- and you can add more if you want, just don't forget to put the commas (,) at the end of the lines (except for the last one)
}
local sSide = "left"
local nTextSize = 1 -- change the text size here (from 1 to 5)

local function printCenter(mon, t)
  local w, h = mon.getSize()
  local y = math.floor((h / 2) - (#t / 2)) - 1
  for i, line in ipairs(t) do
        local x = math.floor((w / 2) - (#line / 2))
        mon.setCursorPos(x, y + i)
        mon.write(line)
  end
end

local mon = peripheral.wrap(right)
mon.setTextScale(nTextSize)
printCenter(mon, tText)