NML elements and attributes are be defined in a NML schema, identified by a URI (or IRI).

The general syntax for IRI is defined in RFC 3987. The syntax of IRI for OGF schema is defined in GFD.084.

* We will use the same URI for both XML and RDF.
- It is *best practice* to end a XML namespace in a alphanumeric characters, thus not in "/" or "#", although it is 
perfectly valid to do so.
- It is *not possible* to end a RDF namespace in a alphanumeric character, and it is *best practice* to end an RDF 
namespace in "#", but other punctuation marks such as "/" are valid too.
- GFD.084 recommends the syntax "http://schemas.ogf.org/nml/2012/10/nml".

Proposal:

For the base schema:
 http://schemas.ogf.org/nml/2012/10/base#

For subordinate schema:
 http://schemas.ogf.org/nml/2012/10/ethernet#

After publication, we will publish a HTML document at this schema pointing to (a) the GFD standard, (b) the XML schema 
and (c) the RDF schema. Pointers are -if possible- augmented with computer readable (e.g. RDDL ) pointers.

We will pick a date now, so implementations can start using that. Schemas that are published before the NML-base 
document is ratified MUST contain a large warning "DRAFT SCHEMA", but can use these URIs.