'file' URI scheme

[Luke -Jr]

I have been unable to find specifications defining how path component 
parameters are handled with the 'file' URI scheme.

For example:

file:///etc;foo/config;bar/some.conf;hi

Does this refer to /etc/config/some.conf (the most obvious), or something 
entirely different? Are there parameters that can be used to specify a 
different file (perhaps named stream selection?)? Or is all this 
filesystem-dependant and thus undefined in general?

Thanks,

Luke

P.S. Please CC me, as I am not subscribed to this list.