[ednote] Mentioning Fragment Identifiers

[egekorkan]

Copying over the editor's note (soon to be removed)

Under 12.1 application/td+json Media Type Registration / Fragment identifier considerations:

Editor's note: Other Fragment Identifier Considerations

We may want to explictly allow use of JSON Pointer as a fragment identifier [RFC6901]. There is in fact an assertion requiring them in TMs for tm:optional. These are internal references, however, so we might not have to allow them for external references. By default the json media type does not support a fragment identifier but td+json could.