Used to include the contents of one stylesheet within another.
A URL (absolute or relative) of another stylesheet to be textually included within this one.
To customize the way in which the
If the URI is relative, then it is interpreted relative to the base URI of
xsl:include element is always used at the top level of the
stylesheet. The top-level elements of the included stylesheet effectively
xsl:include element may also be used at the top level of the
included stylesheet, and so on recursively.
("Textual inclusion" here is a simplification: attributes and namespaces declared
xsl:stylesheet element of the including module do not affect
anything in the included module.)