For centuries, punctuation served as a rhetorical device guiding the reader on when to stop or pause when reciting a text. In the late 17th century, the rhetorical uses of punctuation were gradually replaced with its logical functions in written prose, scientific literature, and mathematical expressions. The guiding principle in using punctuation marks (as in much of the remainder of communication) is that, when the need for a mark is unclear, it should only be used if it red