"Frame structure" was originally a term in architecture. It refers to the position and sturdiness of the house with four beams and eight columns.
Youdao is "The upper beam is not straight, the lower beam is crooked", and this is the reason.
Later, people also often used it to describe the settings of mechanical equipment and components.
In literature, it can also be used to describe the layout and priority arrangement of an article, etc.
In the field of calligraphy, painting and calligraphy works, "frame structure" can also be used to express whether the arrangement of a certain position is appropriate.
Here we take the word "reverse" as an example to understand the importance of the frame structure.
I, love, and, these three words are written backwards for the first time, so the first line is obviously not suitable.