[مكاوي وحداوي]

.Hi how are you? I hope you are doing well

(My question relate with chapter five (The sound of language

I have concern about small symbols which enclosed within square brackets some of it unknown, also some of
symbol has small mark's above

.Really these chapter made me mad I could not get any thing from it despite I read it many time I hope you can explain these chapter for us

.Beast regards