NAM — fragment part in file: or http: IOR

I am just reflecting over the optional IOR syntaxes using file:// and
http:// URI's and have one suggestion. URI's sport a `fragment identi-
fier', i.e. an identifier following a hash sign.
Now this fragment identifier could be useful to disambiguate between
many IORs in the referenced file. I can think of several possibilities:

1.) The fragment-id is numerical. The file contains many IORs, separated
by newlines, and the fragment-id is an index into the file.

2.) The file contains many lines of the format `identifier WS IOR', i.e.
a simple tab-separated table. The fragment-id denotes the first IOR
where the identifier matches.

3.) The ORB checks each IOR in the file and looks for one whose Reposi-
tory Id matches the fragment-id.