local function start()
    print("GPS program started.")
end

local function stop()
    print("GPS program stopped.")
end

local function restart()
    stop()
    start()
end

local function main()
        print("Chat main loop running...")
    while true do
        local event = os.pullEvent()
        if event == "char" then
            print("GPS Char")
        end
    end
end

return { start = start, stop = stop, restart = restart, main = main }