demo

os.loadAPI("button")
m = peripheral.wrap("top")
m.clear()

function fillTable()
  button.setTable("Summon wither", test, 10,30,3,10)
  button.screen()
end

function getClick()
  event,side,x,y = os.pullEvent("monitor_touch")
  button.checkxy(x,y)
end

function test()
  button.flash("Summon wither")
  rednet.broadcast("start")
end

rednet.open("left")
fillTable()
button.heading("Demo")
while true do
  getClick()
end