Implementation of OPS 2.0: Issues in the generation of the navigation information (the table of contents), the OPF file (which is at the center of the OPS 2.0 spec), and XHTML (the content of the "epub" document) were resolved. This update generates documents that implement the OPS 2.0 v0.984 draft specification dated 16-04-2007. Read more information on OPS and the International Digital Publishing Forum.