Well, in addition to epub, it would nice if it could validate other complex file structures, e.g. docx or any of the other OpenXML formats: http://openxmldevelo

Well, in addition to epub, it would nice if it could validate other complex file structures, e.g. docx or any of the other OpenXML formats: http://openxmldeveloper.org/default.aspx http://openxmldeveloper.org/default.aspx