Comma the purpose of the comma. There are also a number of comma-like diacritics with "COMMA" in their Unicode names. These do not serve a punctuation function. A comma-like low quotation mark is also available (shown below; raised single quotation marks are not shown). Various other Unicode characters combine commas or comma-like figures with other characters, and are not shown here. In the 3rd century BC, Aristophanes of Byzantium invented a system of single dots ("distinctiones") that separated verses (colometry) and indicated the amount of breath needed to complete each fragment of the text when reading aloud. The different lengths were
Comma Other ascender letters with carons, such as letters "ȟ" (used in Finnish Romani and Lakota) and "ǩ" (used in Skolt Sami), did not modify their carons to superscript commas. In 16th-century Guatemala, the archaic letter cuatrillo with a comma (Ꜯ, ꜯ) was used to write Mayan languages. Comma The comma is a punctuation mark that appears in several variants in different languages. It has the same shape as an apostrophe ( ' ) or single closing quotation mark in many typefaces, but it differs from them in being placed on the baseline of the text. Some typefaces render it as