Last Call Review of draft-ietf-httpbis-origin-h3-03
review-ietf-httpbis-origin-h3-03-artart-lc-thompson-2023-02-28-00

I'm the designated ArtArt last call reviewer for this draft.

This is essentially a _pro forma_ update of the corresponding HTTP/2 document. 
It's substantially ready to go.

Three nits:

1) The readability of the main paragraph of section 2 could, I think, be
improved.

Instead of

   "Where [ORIGIN] indicates that the ORIGIN frame should be sent on Stream 0,
    this should be interpreted to mean the HTTP/3 control stream.
    The ORIGIN frame is sent from servers to clients on the server's control
    stream."

this should (unless I misunderstand it), be a new paragraph, something a bit
more explicit, e.g.:

   Where [ORIGIN] indicates that the ORIGIN frame should be sent on Stream 0,
   this should be interpreted to mean the appropriate HTTP/3 control stream:
   that is, the ORIGIN frame is sent from servers to clients on the server's
   (unidirectional) control stream.

2) To match the HTTP/2 and IANA registry entries, the table in section 4 should
read

    ORIGIN      0x0c    Section 2

3) Again in section 4, it took me rather a long time to chase down the actually
relevant bit of the '[IANA] "HTTP/3 Frame Type" registry [HTTP3]', which is not
in the referenced document at all.  Wouldn't a reference to the think itself,
https://www.iana.org/assignments/http2-parameters/http2-parameters.xhtml#frame-type,
be better here?

ht