This package together with its subpackages contains the code of Saxon-PE and Saxon-EE, other
than the code that is in common with the open-source version Saxon-HE.
This package contains classes used to support expressions and
instructions that are new in XPath 3.0, XQuery 3.0, or XSLT 3.0, and that don't fit
conveniently into a more specialized category (such as streaming).