What do the two boxes next to the hard pen calligraphy paper say?

In the two boxes next to the calligraphy paper, the following contents are usually written:

1. Title or theme: This is the title or theme of a five-character quatrain, which usually appears in the first box. The title can be a summary of the background, theme or artistic conception of the poem, or some explanation or explanation about the poem itself.

2. Author or source: This is the author or source of the five-character quatrain, which usually appears in the second case. The author is an ancient poet or a modern writer, and the source is a collection of poems or related documents.