Other Symbols
The symbol for the voiceless alveolar lateral fricative forms the basis for the occasional ad hoc symbols for other voiceless lateral fricatives—retroflex, palatal, and velar (the latter two only known from affricates):
The symbol for the alveolar lateral flap is the basis for the expected symbol for the retroflex lateral flap:
Such symbols are rare, but are becoming more common now that font-editing software has become accessible. The letter for the voiceless retroflex lateral fricative was included in Unicode 6.0 as U+A78E ꞎ latin small letter l with retroflex hook and belt (HTML: ꞎ), with the annotation, voiceless lateral retroflex fricative, used to transcribe Toda. Everson Mono already has a glyph for this tentative code point. Note however that this is not sanctioned by the IPA. There are no Unicode code points assigned for the other letters, except that "ɭ with belt" and "ɺ with retroflex hook" can be represented as composite characters (ɬ or ɺ, followed by U+0322 ̢ combining retroflex hook below (HTML: ̢)). Also note that although the Charis SIL and Doulos SIL fonts have those glyphs in the Private Use Area (PUA), PUA code points should not be used for data exchange.
Read more about this topic: Lateral Consonant
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