Evan Lenz is principal of Lenz Consulting Group, an XML consulting firm. He's author of XSLT 1.0 Pocket Reference and co-author of Office 2003 XML, has served as invited expert on the W3C XSL Working Group, and most recently has taken on XBRL consulting projects, for clients including XBRL International. Lenz Consulting Group provides an array of services including content strategy consulting, custom XML training, XML information modeling, XQuery, XSLT, and XSL-FO development, specification design, and representation on standards bodies.