A more thorough explanation:

Definition: Albus liber (al-bəs lI-bər) is a term in Law Latin that means "white book." It refers to an ancient book that contains a compilation of the laws and customs of the city of London. This book is also known as the White Book.

Example: The Albus Liber was created in the 13th century and contains important information about the legal system and customs of London during that time.

Explanation: The example illustrates how the Albus Liber is an ancient book that contains information about the laws and customs of London. It was created in the 13th century and is an important historical document that provides insight into the legal system and customs of that time.