Modifier Tone Letters

{{Infobox Unicode block

|rangestart = A700

|rangeend = A71F

|script1 = Common

|symbols = Tone marks

|4_1 = 23

|5_0 = 4

|5_1 = 5

|note = {{cite web|url=https://www.unicode.org/ucd/|title=Unicode character database|work=The Unicode Standard|accessdate=2023-07-26}}{{cite web|url=https://www.unicode.org/versions/enumeratedversions.html|title=Enumerated Versions of The Unicode Standard|work=The Unicode Standard|accessdate=2023-07-26}}

}}

Modifier Tone Letters is a Unicode block containing tone markings for Chinese, Chinantec, Africanist, and other phonetic transcriptions. It does not contain the standard IPA tone marks, which are found in Spacing Modifier Letters.

{{angbr IPA|꜀◌ ꜁◌ ꜂◌ ꜃◌ ◌꜄ ◌꜅ ◌꜆ ◌꜇}} are used to mark yin and (underlined) yang splits of the ping, shang, qu and ru tones, respectively, in the etymological four-tone analysis of Chinese. The dotted tone letters {{angbr IPA|꜈ ꜉ ꜊ ꜋ ꜌}} are used for the pitch of neutral tones, while the reversed tone letters {{angbr IPA|꜒ ꜓ ꜔ ꜕ ꜖}} and neutral {{angbr IPA|꜍ ꜎ ꜏ ꜐ ꜑}} are used for tone sandhi. {{angbr IPA| ꜗ  ꜘ  ꜙ  ꜚ }} are modifier letters used in Ozumacín Chinantec. {{angbr IPA|ꜛ ꜜ}} are the IPA modifier letters for upstep and downstep, while {{angbr IPA|ꜝ ꜞ ꜟ}} are substitutes people used before broad font support of the IPA, and still preferred by some.