Punctuation

The act or art of punctuating or pointing a writing or discourse; the art or mode of dividing literary composition into sentences, and members of a sentence, by means of points, so as to elucidate the author's meaning.

the use of certain marks to clarify meaning of written material by grouping words grammatically into sentences and clauses and phrases

the marks used to clarify meaning by indicating separation of words into sentences and clauses and phrases