Editing International Phonetic Alphabet (section)

==== Diphthongs ====
[[Diphthong]]s are typically specified with a non-syllabic diacritic, as in {{angbr IPA|ui̯}} or {{angbr IPA|u̯i}}, or with a superscript for the on- or off-glide, as in {{angbr IPA|uⁱ}} or {{angbr IPA|ᵘi}}. Sometimes a tie bar is used: {{angbr IPA|u͜i}}, especially when it is difficult to tell if the diphthong is characterized by an on-glide or an off-glide or when it is variable.

'''Notes'''
* {{angbr IPA|a}} officially represents a front vowel, but there is little if any distinction between front and central open vowels (see {{section link|Vowel#Acoustics}}), and {{angbr IPA|a}} is frequently used for an open central vowel.<ref name="thomason" /> If disambiguation is required, the [[Retraction (phonetics)|retraction diacritic]] or the [[Relative articulation#Centralized vowels|centralized diacritic]] may be added to indicate an open central vowel, as in {{angbr IPA|a̠}} or {{angbr IPA|ä}}.