Indentation of the first line is a typesetting method, which is usually used at the beginning of a text or paragraph. It means to leave a certain space at the beginning of the first line, and then start writing the body content. This typesetting method can make the article clearer and easier to read, and it is also convenient to distinguish different paragraphs.

Although the indentation of the first line is very helpful to the overall beauty and readability of typesetting, it may not be suitable for some special typesetting needs. For example, if we need to write program code or format tables, we don't need to indent the first line.

When indenting the first line, we can use the indentation function of office software such as Microsoft Word or manually adjust the indentation parameters. Generally speaking, it is recommended to adjust the indentation to 2 characters or 3 characters to ensure the best typesetting effect.

To sum up, the first line indentation is a common way of text typesetting, which can make the article look cleaner and clearer, and facilitate readers to better understand the content of the article. Whether you are writing a document or a paper, you should pay attention to the indentation of the first line in order to read and write better.