A more thorough explanation:

Subparagraph form is a way of writing legal documents, such as patent claims, where each item is listed in an indented subparagraph. This style is also known as tabular form. It is different from other styles, such as colon-semicolon form, outline form, and single-paragraph form.

Here is an example of a patent claim written in subparagraph form:

1. A device for cleaning floors, comprising:
    a. a handle;
    b. a base plate;
    c. a motor; and
    d. a brush.

In this example, each component of the device is listed in a separate subparagraph, making it easy to read and understand.

Another example of subparagraph form can be found in legal briefs, where each argument or point is listed in a separate subparagraph.

Subparagraph form is a useful way of organizing information in legal documents. By listing each item in a separate subparagraph, it makes it easier for the reader to understand and follow the document. It is especially useful in patent claims, where each component of an invention needs to be clearly defined and described.