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.
Star Wars: A New Hope - The Special Edition was a four-issue series of comic adapting the Special Edition release of Star Wars: Episode IV A New Hope and was published by Dark Horse in 1997 to coincide with the film's re-release. The four covers make up a collage of characters and settings from A New Hope.