where's the spec?

I'm trying to point someone to something in the DITA 1.0
spec online, and I can't find it.

I have my own copy, but that's not what I want.

I have found a pointer to a zip of the standard,
but that's not what I want.

I would think what I want is obvious--the spec online
in HTML so that one can point to it.  Where is such
a thing, and why is it so hard to find from the page
that says "OASIS Standards"?

paul