Hi, If someone knows an expert in XML (and RDF) namespaces at your local institute, I appreciate it if you can get into touch with me. FYI -- I like some confirmation if my ideas how a slash (/) or hash (#) should or should not be appended to a namespace. See https://forge.ogf.org/sf/go/artf6570 for what I understand so far about http://www.w3.org/TR/xml-names/ (XML) and http://www.w3.org/TR/swbp-vocab-pub/ (RDF). My understanding now is that if we want to define the namespace: http://schemas.ogf.org/nml/2012/10/nml With elements such as http://schemas.ogf.org/nml/2012/10/nml#Node Then in RDF, we need to write: @prefix nml: <http://schemas.ogf.org/nml/2012/10/nml#> urn:ogf:network:example.org:2012:mynode a nml:Node And in XML, we need to write: <root xmlns:nml="http://schemas.ogf.org/nml/2012/10/nml"> <nml:Node id="urn:ogf:network:example.org:2012:mynode" /> Thus WITH slash in the RDF namespace shortcut, and WITHOUT slash in the XML namespace shortcut. I'm somewhat confident of the RDF example, but not sure about the XML example -- XML only seems to define the concept of "'Node' at the 'http://schemas.ogf.org/nml/2012/10/nml' namespace" but never the concept of "'http://schemas.ogf.org/nml/2012/10/nml#Node'" and how to add a slash to join the two together. Feedback is HIGHLY appreciated. Thanks, Freek