Tone letters

A tone letter is a letter that is used to represent tone.

Nookipedian language
See also: Nookipedian Romanised Alphabet

Tone letters are used when no diacritics are available, such as in SMS (Nookipedian language tones are usually indicated by diacritics, sometimes by final consonant letters).

Tchilkenva Unified
Because all languages in Tchilkenva Unified are tonal, there are six tones in most languages, but eight in Tchilkenvan and Yutarlei. The 1906 version of the Tchilkenva reference alphabet used final letters resembling numerals, but in the 1986 verion of the Tchilkenva reference alphabet, it used final consonant letters to indicate tone. Some of the letters pull double-duty, representing consonants.

Teinonken language
See also: Ping'im Teinonken

In Ping'im Teinonken, a consonantal letter is used at the end of the syllable.