what is a comma used for in writing
The comma is used in many contexts and languages, mainly for separating parts of a sentence such as clauses, and items in lists, particularly when there are three or more items listed. The word comma comes from the Greek ÎºÏÎ¼Î¼Î± (kÃ³mma), which originally meant a cut-off piece; specifically, in grammar, a short clause. A comma-shaped mark is used as a diacritic in several writing systems, and is considered distinct from the cedilla. The rough and smooth breathings (á¼, á¼) appear above the letter in Ancient Greek, and the comma diacritic appears below the letter in Latvian, Romanian, and Livonian.