Headings are generally divided into general headings, sub-headings and sub-headings. The first-level title and the second-level title represent a serial number with different font sizes;

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.

First-class title: the title number is "I", No.4 is in bold, exclusive, and there is no punctuation at the end.

Second-level title: the title serial number is "(1)", which is the same as the font size of the text, and it is a special line with no punctuation at the end.

Third-level title: the title serial number is "1." , the same size and font as the text.

There are also four or five titles;

Four-level title: the title serial number is "(1)", which is the same as the text size and font.

Five-level title: the title serial number is "①", which is the same as the font size and font of the text.

Extended data:

For the requirements of the topic, there are three points to sum up:

First of all, be clear. It is necessary to reveal the scope or argument of the topic, so that people can know the general outline of the article, the main content of the discussion and the author's writing intention after reading the topic, instead of specious, hiding the head and revealing the tail, and playing hide-and-seek with readers.

Second, be concise. The topic of the paper should not be too long. If it is too long, it will make people feel cumbersome and cumbersome, and they will not get a clear impression, thus affecting the overall evaluation of the article. Don't be too abstract and empty, and don't use very useful or invented words in the title, so as not to make readers feel like a sea of smoke when they see the title, and they can only understand it after reading the text completely.

Third, it must be novel. The title, like the content and form of the article, should have its own uniqueness. Not unconventional, unconventional, fascinating and pleasing to the eye, thus arousing readers' interest in reading.