Inserts a manual page break, and moves the text found to the right of the cursor to the beginning of the next page. The inserted page break is indicated by a non-printing border at the top of the new page.
插入手动分页符，并将光标右侧的文字移到下一页的起始处。所插入的手动分页符由新页面顶端的非打印边框指示。