Appendix refers to articles or reference materials attached to the back of the text, which is a supplementary part of the manual or paper and is not necessary. This is a material that is inconvenient to include in the text because it is too large or taken from a copy.
Appendix function:
1. For the completeness of instructions or papers, if it is incorporated into the text, it will be harmful to the processing and logic of the text. This kind of material contains more detailed descriptions of information research methods and technologies than the text, which is of great supplementary significance to understanding the main content.
2. Materials that are inconvenient to be included in the text because of too much space or based on copywriting.
3. Some important raw data, mathematical derivation, calculation programs, notes, block diagrams, statistical tables, printer output samples, structural drawings, etc.