The original version of the package improved the output quality of the Xy-pic package when PDF documents are generated. Its success was such that its functionality has now been incorporated in Xy-pic itself (version 3.8); the present release of the package is no more than a wrapper for the PDF driver; it warns the user that it is no longer necessary.

The author is Daniel Müllner. The package is Copyright © 2010 Daniel Müllner.