Copy of eBook

As e-book formats emerged and proliferated, some garnered support from major software companies, such as Adobe with its PDF format and others supported by independent and open-source programmers. Different e-readers followed different formats, most of them specializing in only one format, thereby fragmenting the e-book market even more. Due to the exclusiveness and limited readerships of e-books, the fractured market of independent publishers and specialty authors lacked consensus regarding a standard for packaging and selling e-books.Open eBook as defined required subsets of XHTML and CSS; a set of multimedia formats (others could be used, but there must also be a fallback in one of the required formats), and an XML schema for a "manifest", to list the components of a given e-book, identify a table of contents, cover art, and so on. This format led to the open format EPUB.