A single InDesign document can contain up to 9,999 pages, but page numbers can be as large as 999,999. (For example, you can correctly number a 100‑page document that starts on page 9,949.) By default, the first page is a recto (right) page numbered 1. Odd-numbered pages always appear on the right; if you use the Section Options command to change the first page number to an even number, the first page becomes a verso (left) page.