Webmaster in a Nutshell, Third Edition

Name

<xsl:param>

Synopsis

An <xsl:param> element binds its contents to the specified name, which can be called from and included in a template. As a top-level element, <xsl:param> provides a default value used if the named parameter is not supplied when a style sheet is called. An <xsl:param> element may also appear inside an <xsl:template> element to receive the values of the parameters passed in with <xsl:with-param>, and to provide a default value good only inside that template for the case where a proper <xsl:with-param> element is not used. If the select attribute is included, its value becomes the default value of the parameter, in which case the value of the content should be empty.

<xsl:param
   name="name"
   [select="expression"]>
   ...
</xsl:param>