Vowels: (+syllabic, -consonantal, +sonorant)
High + + + + ++--- - - - - -
Low ---- ----- - - +/- + +
Back** - - + - +++ + - + -+
Round - - - + ++--- + + + --
Tense + - ++- + +
* This symbol represents a low back rounded vowel in English. In other
languages it represents a mid lax back rounded vowel.
** The central and back vowels given in the transcription key (appendix 3) all
have the feature [+back].