The urn:org:netkernel:xml:core module provides a core set of XML transformation services and transreptors and an ROC friendly immutable XML API for DOM.
xml:core provides the XDA resource model. An immutable semi-declarative XML API built over DOM.
The xml-core package provides a basic foundation set of standard XML processing services. There are many additional XML processing services that may be installed including XSLT 2, XQuery, several schema language validators, SOAP message processing tools, RSS/Atom feed processing tools, E4X capability etc etc etc. Search for xml tools