startup.lua

shell.run("clear")
rednet.open("top")
z = 0
MyID = os.getComputerID()

function POS()
x,y = term.getCursorPos()
end

function Clear()
term.setCursorPos(1,1)
print("Messager")
end

function Recieve()
POS()
local y = y - 1
term.setCursorPos(x,y)
id,msg = rednet.receive()
print(id..": "..msg)
end

function Send()
POS()
local y = y + 1
term.setCursorPos(x,y)
input = read()
term.setCursorPos(x,y)
term.clearLine()
rednet.broadcast(""..input)
term.setCursorPos(x,y)
print(MyID..": "..input)
end

Clear()
repeat
parallel.waitForAny(Recieve, Send)
until
z == nil