Morse code instead of starting beep

RouterOS Beginner Basics
1

I would like to change mikrotik starting beeps to morse code:
-.. — -. - + - — ..- -.-. … + .. -

how to do it?

2

make a script that does beeps of various length, make it execute on startup. all is in the scripting manual
http://wiki.mikrotik.com/wiki/Manual:Scripting

Script example

:beep frequency=880 length=100ms;
:delay 100ms;
:beep frequency=784 length=100ms;
:delay 100ms;
:beep frequency=880 length=400ms;
:delay 400ms;
:beep frequency=587 length=800ms;
:delay 400ms;

:delay 600ms;