A more thorough explanation:

Definition: GPO stands for Government Printing Office.

The Government Printing Office is a federal agency responsible for producing and distributing official government documents, such as laws, regulations, and reports. It was established in 1861 and is now known as the Government Publishing Office.

Examples of documents that the GPO produces include:

• The Congressional Record
• The Federal Register
• The United States Code

These documents are important for keeping the public informed about government actions and policies. The GPO ensures that they are printed and distributed in a timely and accurate manner.