Double paragraph refers to placing the object and author of the book up and down respectively, the former is the upper paragraph and the latter is the lower paragraph. In the preceding paragraph, the position should be relatively high to show respect, indicating the name and source of the content of the work, the name, address and courtesy of the donee; In the next paragraph, record the date and place of creation, the author's name and modest words.
Extended data
Selection of signature format. Generally speaking, the signature should be determined according to the number of blanks in the work. If there are many blanks or because of the need of composition, you can make a long signature. If the content of the work occupies the whole picture, we need to consider whether it is appropriate, short or poor.
Characteristics of signature format. When books are given to couplets, the previous paragraph must be written in the first couplet and the next paragraph in the second couplet. For other works, the first paragraph and the second paragraph are generally written on the left. If they sign in two lines, the first paragraph is written at the front and the second paragraph is written at the back. If a single line is signed, the previous paragraph is written in the upper part and the next paragraph is written in the lower part.