In Phonetic Symbols and Spelling Correspondences this section talks about that the different pronunciation is from speakers or dialect. The writer listed a Table 6.6 to show readers how phonetics might describe the speech sounds of any of the world’s language. Besides, English does not have flawless front vowels, but languages such as French and Swedish do.
In last section, Sign-Language Primes, the writer introduce that Sign-Language has a system of morphology, syntactics, semantics, phonetics and phonology. Moreover, the sign-language can be specified by primes of three classes: hand configuration; the motion of the hand(s) toward or away from the body; and the place of articulation.