The part at the beginning of the plan is called the "Preface".
The preface is the beginning of the plan, concisely expressing the background, basis, purpose, significance, guiding ideology, etc. of the plan. Generally, one or two natural paragraphs are enough.
The preface is also called "preface", "preface", "narration", "preface", "introduction" and "preface". Text written on the front of a book or article. The preface in a book is published before the main text and mainly explains the basic content, editing (translation) intention, book writing process, academic value and introduction of the author and translator, etc. Written by the translator and editor or written by others. The preface in an article is often used to explain the main theme of the article or the purpose of writing the article. It can also be understood as a condensed version of what is written.