xsl:processing-instruction element can appear anywhere within an
It causes an XML processing
instruction to be output.
There is a mandatory
name attribute which gives the name of the PI. This attribute is interpreted
as an attribute value template, so it may contain string expressions within curly braces.
The data part of the PI may be given either by a
select attribute or by an enclosed
sequence constructor. If the
select attribute is used and the value is a sequence, then
the items in the sequence are output space-separated.
For example:<xsl:processing-instruction name="submit-invoice">version="1.0"</xsl:processing-instruction>
Note that special characters occurring within the PI text will not be escaped.