The official font and font size setting standards for administrative official documents are as follows:

1. Use point 3 boldface fonts for confidentiality level, confidentiality period, and degree of urgency.

2. It is recommended that the logo of the issuing agency should use small-sized Song fonts. The font size shall be determined by the issuing agency based on the principle of eye-catching and beautiful appearance, but the maximum size cannot be equal to or larger than 22mm × 15mm.

3. The issuing authority shall use number 3 to imitate the Song Dynasty for the logo of the issuing authority. If there is an issuer, the issuer shall be followed by a full-width colon, and the name of the issuer shall be identified in italics number 2 after the colon.

4. The title of the official document should be in Song font size 2 and can be arranged in one or more lines in the center.

5. The main text should be in size 3 imitation Song font, usually with 22 lines per side and 28 characters per line.

6. The "topic word" should be marked in size 3 boldface, placed in the top left column, followed by a full-width colon; the heading should be in small size 3 Song font, with a space between the headings.

7. If there is a carbon copy on the official document, it should be placed one line below the subject heading; the word "cc" should be marked with No. 3 imitation Song font in the left space, followed by a full-width colon; the carbon copy agencies should be separated by commas , align with the CC address after the colon when returning; mark the last CC address with a period.

Characteristics of official documents:

1. Legality of content and procedures: The specific content and preparation procedures of official documents must comply with the provisions of laws and relevant regulations, otherwise they will be invalid.

2. Standardization of form and format.

3. The official document style is concise, the views are rigorous and clear, and the writing is simple and solemn.

4. Dependence on agency work. Agency work is the basis for the formation of official documents, and official documents are special tools for agency work.

In addition to written documents, official documents also include telecommunications documents (telegrams, telephone records), audio-visual documents (recordings, videos), and graphic documents (mainly charts, accompanied by brief text explanations).

With the widespread use of electronic computers, agencies began to use various office automation tools, and also used computers to form agency management automation systems. Electronic computers integrate data, text, image and audio processing, bringing document processing to a new stage of speed and accuracy. Therefore, document processing requires higher technology.