Internet Draft: generic fragment identifier syntax

I would like to call your attention to:

http://ietf.org/internet-drafts/draft-borden-frag-00.txt

This has the potential to define a simplified XPointer.

Let me clarify a few points.

The intention is to define a generic fragment identifier _syntax_:

1) bare names
2) numeric
3) scheme based

Note the symmetry with XPointer :-)

A feature of this standardization is that new syntaxes for fragment
identifiers would use the scheme based extensibility mechanism.

There remains a requirement to define the syntax -> semantic mapping on a
media type by media type basis e.g. it is not the intention to define what:

#foo
or
#/12345

is intended to identify within an arbitrary media type.

Furthermore each media type registration might define _its own subset_ of
the general syntax. That is to say:

application/xml may define the entire XPointer syntax
application/foo+xml may restrict fragments to bare names
audio/foo may restrict fragments to numeric etc.

Jonathan