A more thorough explanation:

A Bates stamp is a machine used to add an identifying mark, usually a number, to a document or its pages. This mark helps to distinguish the document from others in a series.

1. The paralegal used a Bates stamp to add a unique number to each page of the legal brief.

2. The law firm purchased a new Bates stamp machine to help with their document organization.

These examples illustrate how a Bates stamp is used to add a unique identifier to a document or its pages. This helps to keep track of the document and distinguish it from others in a series.