In official IPA transcription, the click letter is combined with a via a tie bar, though is frequently omitted. Many authors instead use a superscript without the tie bar, again often neglecting the . Either letter, whether baseline or superscript, is usually placed before the click letter, but may come after when the release of the velar or uvular occlusion is audible. A third convention is the click letter with diacritics for voicelessness, voicing and nasalization; this would require something like the
guttural diacritic to distinguish uvular–alveolar clicks. Common alveolar clicks in these three transcriptions are: The last can be heard in the sound sample at right; non-native speakers tend to
glottalize clicks to avoid nasalizing them. The nasal click may also be heard at the right. In the orthographies of individual languages, the letters and digraphs for alveolar clicks may be based on either the vertical bar symbol of the IPA, , or on the Latin of Bantu convention.
Khoekhoe and most
Bushman languages use the former;
Naro,
Sandawe, and
Zulu use the latter. ==Features==