Experimental XSLT 4.0 extensions

This section describes features proposed for XSLT 4.0, to the extent they are implemented in Saxon 12.

Enabling syntax extensions not only allows the use of the XSLT extensions described in this section, it also allows XPath 4.0 extensions to be used in expressions and sequence types within the stylesheet, as described in Other XPath 4.0 extensions and elsewhere.