Controlling Output Type
- XML is the default type
<xsl:output method="xml"/>
- HTML 4.0
<xsl:output method="html"/>
- Text
<xsl:output method="text"/>
- Insert whitespace and indent
<xsl:output indent="yes"/>
- Produce DOCTYPE element
<xsl:output doctype-system="students.dtd"/>
*produces: <!DOCTYPE course SYSTEM "students.dtd">