This LabVIEW reference library allow you to convert an arbitrary LabVIEW data structure to and from a human-readable XML string (or file). The reference library (GXML) uses a custom data schema which emphasizes data hierarchy and makes the XML easier to read.
Code and Documentation: http://zone.ni.com/devzone/cda/epd/p/id/6330
Discussion Forum:http://forums.ni.com/ni/board/message?board.id=Components&thread.id=324
