For papers, the first-level title usually adopts the top grid format; For official documents, the first-level title is generally empty.

In paper writing, the first-level title usually adopts the top grid format to highlight the importance and independence of the title. This format helps readers to quickly identify and understand the structure and content of the paper.

In official document writing, the first-level title is generally blank, which is to meet the typesetting norms and format requirements of official documents. The format of empty two boxes makes the title and text of the official document have a certain interval, which makes the official document more formal and standardized.