The header doesn't need to be called 'Url:'. 'Reference:' might
actually be a better name.
On the field-name:
There is a "References:" header already in RFC 822; It takes a list
of entries, identified either by <message-unique@host.domain.path>
forms or "phrase" entries, typically the subject header
of the referenced topic.
[ When I suggested introducing a new uri-cite alternative in [the
list in] this header in some syntax which would be a legal value
of the pre-existing "phrase" syntax, Harald Alvestrand was
guardedly postitive. I want to make URLs work in the
"References:" header but it's a little more complicated thay you
would indicate.]
The existing standard header which really means what you
want is the "Location:" header used in HTTP. MIME would want you
to spell it "Content-location:" (see the brawl Bill Wohler
referred to).
I am afraid that the clean way to do this is not to use two
header atoms here, but to define an URL-parameter such as
"cite-as= " The combined effect of these transforms would be to
change the example
from
Reference: <URL:http://www.domain.foo/pub/faq/my.faq> "Descriptive Text"
to
Location: <URL:http://www.domain.foo/pub/faq/my.faq;
cite-as="Descriptive Text">
or
References: <URL:ftp://rtfm.mit.edu/pub/usenet/my-native-group/my-faq.txt;
cite-as="Latest official My FAQ">
<URL:ftp://ftp.domain.foo/pub/faq/my.faq;
cite-as="Current draft revision of My FAQ">
<URL:http://www.domain.foo/pub/faq/my.faq;
cite-as="Clickable but not always current translation of My FAQ">
Next-header:
<I do not claim to have worked all the encoding requirements of these
examples...>
Harald referred to a Birds Of a Feather (BOF) session to be held
at Dallas to discuss citations. This is the standard method of
testing the water to see if there is probable cause to start a
Working Group on a topic. As I have been telling them, FAQs are
a critical application for anything that they might come up with
in this area. I suspect that the functional equivalent of my
hypothetical "cite-as" parameter seems to me to be something that
would be needed very generally.
Al Gilman
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