I am concerned about freezing this format into the standard because
I think that it is a mistake.
I suggest that the format of this message should be in the IPP protocol
format so that the notification content can represent whatever the
protocol can represent. Text in different languages is one thing
that comes to mind.
This means that for HTTP, the content would go as an application/ipp
entity in an HTTP request and we need a new IPP operation called "notify".
For email, it could go as a Multipart/alternative with one part
text/plain whose content is specified but whose format is unspecified
and with another part which is application/ipp. Alternatively, we
could have two variants of email, one for human consumption and one
for machine consumption.
Although we may be too late in the process to solve this problem as I
have suggested, it is not too late to remove the specification of the
Event Notification Content so that we don't freeze a mistake.
Bob Herriot