CurrentView = 0
 )
 
+func printBell() {
+       fmt.Print("\a")
+}
+
 func tabHandle(gui *gocui.Gui, v *gocui.View) error {
        sids := make([]int, 0, len(Streams)+1)
        sids = append(sids, -1)
 
                        case vors.CmdAdd:
                                sidRaw, name, key := args[1], args[2], args[3]
                                sid := sidRaw[0]
+                               printBell()
                                log.Println("add", string(name), "sid:", sid)
                                keyCiph, keyMAC := key[:chacha20.KeySize], key[chacha20.KeySize:]
                                stream := &Stream{
                                        log.Println("unknown sid:", sid)
                                        continue
                                }
+                               printBell()
                                log.Println("del", s.name, "sid:", sid)
                                StreamsM.Lock()
                                delete(Streams, sid)
                                        log.Println("unknown sid:", sid)
                                        continue
                                }
+                               printBell()
                                log.Println(s.name, ":", string(args[2]))
                        default:
                                log.Fatal("unexpected cmd:", cmd)