The <xsl:value-of> element evaluates an XPath expression, converts it to a string, and writes that string to the result tree.
<xsl:value-of select=EXPRESSION disable-output-escaping="yes" | "no" />selectSpecifies the XPath expression to be evaluated and written to the output tree.
disable-output-escaping (Netscape does not serialize the result of transformation - the "output" below - so this attribute is essentially irrelevant in context. To output html-entities, use numerical values instead, eg for &nbsp)Specifies whether special characters are escaped when written to the output. The available values are yes or no. If yes is set, for example, the character > is output as >, not as &gt.
Instruction, appears with a template.
XSLT, section 7.6.1.
Supported except as above.