2.2.14 [W3C-XSLT] Section 16, Output


The specification states:

 An XSLT processor may output the result tree as a sequence of bytes, although it is
 not required to be able to do so (see [W3C-XSLT] [17 Conformance]). The xsl:output
 element allows stylesheet authors to specify how they wish the result tree to be
 output. If an XSLT processor outputs the result tree, it should do so as specified
 by the xsl:output element; however, it is not required to do so.


The processor does not produce the result tree as a sequence of bytes.