Editing Comma (section)

==Diacritical usage==
<!-- more combining commas in Unicode: above, ... -->
{{Infobox diacritic
 |char=◌̦
 |name=Combining comma below |unicode={{unichar|0326|cwith=◌}}
}}
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{{main|D-comma|S-comma|T-comma}}

The comma is used as a [[diacritic]] mark in [[Romanian language|Romanian]] under {{angbr|s}} ({{angbr|Ș}}, {{angbr|ș}}), and under {{angbr|t}} ({{angbr|Ț}}, {{angbr|ț}}). A [[cedilla]] is occasionally used instead of it, but this is technically incorrect. The symbol {{angbr|d̦}} ('[[D-comma|d with comma below]]') was used as part of the [[Romanian transitional alphabet]] (19th century) to indicate the sounds denoted by the Latin letter {{angbr|z}} or letters {{angbr|dz}}, where derived from a [[Dze|Cyrillic ѕ]] ({{angbr|ѕ}},  {{IPA|/dz/}}). The comma and the cedilla are both derivative of {{angbr|ʒ}} (a small cursive {{angbr|z}}) placed below the letter. From this standpoint alone, {{angbr|ș}}, {{angbr|ț}}, and {{angbr|d̦}} could potentially be regarded as stand-ins for /sz/, /tz/, and /dz/ respectively.

In [[Latvian language|Latvian]], the comma is used on the letters {{angbr|ģ}}, {{angbr|ķ}}, {{angbr|ļ}}, {{angbr|ņ}}, and historically also {{angbr|ŗ}}, to indicate [[Palatalization (phonetics)|palatalization]]. Because the lowercase letter {{angbr|g}} has a [[descender]], the comma is rotated 180° and placed over the letter. Although their [[Adobe Systems|Adobe]] [[glyph]] names are 'letter with comma', their names in the [[Unicode]] Standard are 'letter with a cedilla'. They were introduced to the Unicode standard before 1992 and, per Unicode Consortium policy, their names cannot be altered. In the late 1920s and 1930s, the [[Latgalian language|Latgalian]] orthography used in Siberia used additional letters with comma: {{lang|ltg|{{angbr|c̦}}, {{angbr|d̦}}, {{angbr|m̦}}, {{angbr|p̦}}, {{angbr|ș}}, {{angbr|ț}}, {{angbr|v̦}}, {{angbr|z̦}}|italic=unset}}.<ref>{{Cite journal |last=Andronovs |first=Aleksejs |last2=Leikuma |first2=Lidija |date=2009 |title=Par latgaliešu rakstu jeb literārās valodas pareizrunas kopšanu |url= http://www.lu.lv/fileadmin/user_upload/lu_portal/apgads/PDF/Baltu-filologija_XVIII-1-2_2009.pdf |journal=Baltu filoloģija |language=lv |volume=18 |issue=1/2 |pages=5–14}}</ref>

In [[Livonian language|Livonian]], whose alphabet is based on a mixture of Latvian and [[Estonian language|Estonian]] alphabets, the comma is used on the letters {{angbr|ḑ}}, {{angbr|ļ}}, {{angbr|ņ}}, {{angbr|ŗ}}, {{angbr|ț}} to indicate palatalization in the same fashion as Latvian, except that Livonian uses {{angbr|ḑ}} and {{angbr|ț}} to represent the same [[palatal consonant|palatal]] [[plosive consonant|plosive]] phonemes which Latvian writes as {{angbr|ģ}} and {{angbr|ķ}} respectively.

In [[Czech language|Czech]] and [[Slovak language|Slovak]], the diacritic in the characters {{angbr|ď}}, {{angbr|ť}}, and {{angbr|ľ}} resembles a superscript comma, but it is used instead of a [[caron]] because the letter has an [[ascender (typography)|ascender]]. Other ascender letters with carons, such as letters {{angbr|ȟ}} (used in [[Finnish Kalo language|Finnish Romani]] and [[Lakota language|Lakota]]) and {{angbr|ǩ}} (used in [[Skolt Sami language|Skolt Sami]]), did not modify their carons to superscript commas.

In 16th-century [[Guatemala]], the archaic letter [[cuatrillo]] with a comma ({{angbr|Ꜯ}} and {{angbr|ꜯ}}) was used to write Mayan languages.<ref>{{cite web |last=Everson |first=Michael |author-link=Michael Everson |title=N3028: Proposal to add Mayanist Latin letters to the UCS|url= https://www.unicode.org/L2/L2006/06028-n3028-tresillo.pdf |date=30 January 2006 |access-date=4 February 2017 |archive-date=6 July 2017 |archive-url= https://web.archive.org/web/20170706090302/http://www.unicode.org/L2/L2006/06028-n3028-tresillo.pdf |url-status=live}}</ref>