Noticeboard

mon1 = peripheral.wrap("front") -- path side
mon2 = peripheral.wrap("back") -- runway side

mon2.clear()
mon1.clear()

mon2.setTextScale(1.6)
mon2.setCursorPos(6,2)
mon2.write("RUNWAY 1A")

function cwrite(text)
  local maxw, maxh = mon1.getSize()
  local curx,cury = mon1.getCursorPos()
  mon1.setCursorPos((maxw-#text)/2,cury)
  mon1.write(text)
  mon1.setCursorPos(curx,cury+1)
end

while true do
  mon1.setCursorPos(1,3)
  cwrite("  Sulna International Airport")
  sleep(3)
  mon1.clear()
  mon1.setCursorPos(1,2)
  cwrite("Terminal 1(A) Entrance")
  mon1.setTextScale(1.4)
  mon1.setCursorPos(1,4)
  cwrite("<--------")
  term.setCursorPos(1,5)
  sleep(3)
  mon1.clear()
end