Header In modern computer electronic documents, the top area of each page is generally called the header. Header is usually used to display additional information of a document, and can insert time, graphics, company logo, document title, file name or author name, etc.
Title function:
The main purpose of setting the subtitle is to clearly show the level of the article. Some use words, which generally express the central content of this level; Some also use numbers, which only indicate the order of "one, two, three", and play the role of connecting the preceding with the following. It should be noted that no matter which form is adopted, it is closely related to the content of the hierarchy and the close relationship between the upper and lower levels.
Subtitle refers to the title with serial number (1), which is generally the same as the text, single line and without punctuation.
The third-level title refers to the title with serial number 1. Usually, it is the same size and font as the text.