_G.clip = ""

function start()
 return os.spawn(function()
   local lc
   while true do
    local eT = {coroutine.yield()}
    if eT[1] == "clipboard" then
     if computer.uptime() > lc + 5 then
      _G.clip = ""
     end
     lc = computer.uptime()
     _G.clip = _G.clip .. eT[3]
    end
   end
 end)
end