page numbering的用法和樣例：
例句
- A line at the head of a page or passage giving information such as the title, author, and page number.
說明文字在書頁或文章頂部用於說明如標題、作者及頁碼等內容的一行文字 - Text that appears in the bottom margin of printed pages, such as a document title, page number, or data.
在有印刷文字的頁面底部空白處出現的文字，如文件標題、頁面號碼或日期等。
