Pete Resnick <presnick(_at_)qualcomm(_dot_)com> wrote:
In 2822bis, I think it would be fine to clarify that and say
"User-defined header fields (those starting with 'X-') no longer
I think that might be a little too terse. I think it could be a lot
clearer with slightly more explanation:
There is no longer a distinction made between User-defined header
fields (which start with "X-") and Extension header fields (which
don't). Both are now treated uniformly as Optional header fields.