Does the format picture of calligraphy paper have only one word format?

No.

1. Dou Fang: Dou Fang is a vertically written square format, in which the length and width of four characters are equal, and the starting and ending of the pen can be in the middle of the square.

2. Banner: The banner is a hanging form of single writing, suitable for rectangular strip screens. The writing content of the banner is poetry or couplets, with a long length and a narrow horizontal width.