the marks used to clarify meaning by indicating separation of words into sentences and clauses and phrases
A punctuation mark is a symbol such as a full stop or period, comma, or question mark that you use to divide written words into sentences and clauses. One of a set of marks or signs, such as the comma (,) or the period (.), used to punctuate texts. a sign, such as a comma or question mark, used to divide a piece of writing into sentences, phrases, etc