# Package com.saxonica.xsltextn

This package contains classes used at compile time to support extensions to XSLT beyond 2.0: both facilities in the working draft of XSLT 3.0, and extensions specific to Saxon.

These classes are generally implementations of `StyleElement`, representing elements on the stylesheet tree. They are instantiated using the factory class `StyleNodeFactoryPE` or `SaxonElementFactoryEE` as appropriate.

- Interface Summary
  Interface | Description
  --- | ---
  ExtensionElementFactory | Interface ExtensionElementFactory.

- Class Summary
  Class | Description
  --- | ---
  TypeAliasManagerPE | Manager for saxon:type-alias declarations in a stylesheet.