A new working draft of Streaming Transformations for XML (STX) has been posted. "Streaming Transformations for XML (STX) is a one-pass transformation language for XML documents that builds on the Simple API for XML (SAX). STX is intended as a high-speed, low memory consumption alternative to XSLT. Since it does not require the construction of an in-memory tree, it is suitable for use in resource constrained scenarios." This draft derives the STX data model from the XPath 2.0 data model, and derives STXPath from XPath 2.