What is the content of "calligraphy"

Generally speaking, calligraphy works are composed of words and brushwork. Text has three appearance forms: 1, with lines vertically and columns horizontally; 2. There are columns vertically and no rows horizontally (or columns vertically and rows horizontally); 3. There are no rows in the vertical direction and no columns in the horizontal direction. In calligraphy, the font is smaller than the text, and the style of the book can be consistent with or different from the text, and the style is in harmony with the text.