An end-stop in poetry is a pause at the end of a poetic line. A period (full stop), comma, semicolon, or other punctuation signifying the conclusion of a whole phrase or cause, or even the logical end of a complete idea, can be used to indicate an end-stop. The term may also be applied to similar signs used in other media. End-stopping was originally used in poetry to indicate that additional lines should not be added to a poem. Modern use of this term refers to the final stage in printing typesetting when elements such as text boxes or images are filled in with ink. End-stopping allows printers to fill in the whitespace between letters, words, and lines without having to start over from scratch each time they do so. It also ensures consistent margins on all pages of a printed document. End-stopping is different from bookbinding, where entire sections of a book are usually bound together with adhesive or leather straps. These joined sections are called gatherings. In a book composed only of gatherings, there would be no empty space between pages; instead, the edge of one page would be glued to the next. Bookbinders often use end-stopping to mark off certain areas of a manuscript or print that should not be included in the final version before it is set into type or printed. For example, a bookbinder might insert blank pages between chapters or sections of a book to provide room for future expansion.