Presentations usually have more metadata in the slidesinfo wrapper. Here's a typical example:
<slidesinfo> <title>Supporting Localized Generated Text</title> <titleabbrev>Generated Text</titleabbrev> <author><firstname>Norman</firstname><surname>Walsh</surname></author> <pubdate>Sunday, 08 Apr 2001</pubdate> <confgroup> <conftitle>XSLTUK-01</conftitle> <confdates>08 Apr - 09 Apr 2001</confdates> <conftitle role="address">Keble College, Oxford, UK</conftitle> <confnum>1</confnum> </confgroup> <releaseinfo role="version">Version TEST</releaseinfo> <copyright><year>2001</year> <holder>Sun Microsystems, Inc.</holder></copyright> </slidesinfo>