documentation on URL format for BK/Web

What are the various URL formats for referring to a ChangeSet in BK/Web?
I want to add URLs in our bugzilla system, and am looking for the 
'right' thing to save.

I found the following  old note from Larry, but trying

    http://bkmaster/repo/cset@445273fe1nODuAzt6euvWZVZ7rivmw

didn't seem to work with  bk 3.2.4.

    -castor


>    I've made a few changes to the BK/Web service on BK/Bits. There are some
>    cosmetic changes but the substantial changes are as follows:
>
>    - Traditional diff -Nur style patches served as text/plain. You can
>    now wget your favorite patch. I fully expect that the BK users in
>    the kernel will start including URLs to the patches as part of the
>    submission process. For the BK users, the URL you want is
>
>    bk changes -r+ -nd'http://$proj.bkbits.net/$repo/gnupatch@:MD5KEY:'
>
>    where you fill in $proj and $repo and this assumes that you want to
>    include a pointer to the most recent changeset.
>
>    - Bookmarkable changeset and patch links. When you navigate to a
>    changeset you'll see a link that says "Bookmarkable link". If you
>    click on that you'll see the URL change from cset@xxxxxx to
>    cset@<MD5KEY>. If you use the latter in your mail messages to your
>    friends that URL will always work; the first one won't.
>
>    - Added sorting to the stats page, now you can see who is busy faster.
>    The definition of "recent" on the stats page is the last 3 months.
>
>    - fixed searching (it works, it's still slow on large trees)
>
>    - cleaned up some bugs in the advertising (we're looking for people so
>    I stuck ads up on the web pages).
>
>    Check it out at http://www.bkbits.net and let me know if you find a bug.