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

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

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

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

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