1, widely used: notice is the most widely used in all official documents.
2. Multifunctional: it can be used to convey instructions, issue regulations, arrange work, provide technical guidance, approve documents, appoint and dismiss cadres, etc.
3. pertinence: a specific description of an event and specific requirements for a certain content.
4. Guidance: issuing regulations, conveying instructions, arranging work and forwarding documents are all achieving strong guidance functions.