First Public Working Drafts: XProc 2.0: An XML Pipeline Language; XProc 2.0: Standard Step Library
The XML Processing Working Group has published a First Public Working Draft of XProc 2.0: An XML Pipeline Language, together with a Standard Step Library. XProc is an XML pipeline language; that is, a declarative dataflow language used to express steps required to process XML documents, coordinating operations such as querying, validation, inclusion, transformation and sorting. The XProc step library defines names and characteristics for a set of pipeline steps that every XProc processor is expected to support, as well as additional optional steps. Lean more about the XML Activity.