BBY/ABY is used to position items along the Star Wars Timeline. BBY refers to Before the Battle of Yavin. ABY refers to After the Battle of Yavin. The Battle of Yavin in Episode IV: A New Hope occured in 0 BBY/ABY.
The Mos Eisley Cantina Pop-Up Book is a young reader book published by Little Brown in 1996. The book features some of the patrons of the Mos Eisley Cantina, providing back-stories originating in Tales From the Mos Eisley Cantina. Each vignette ends with a sentence explaining the role that the cantina plays in that character's life.