And of course if we had a slightly richer publication format we could
use, oh, say, underline, bold, italics and maybe even a special font
for normative terms, but I guess I am dreaming decades ahead...
I was waiting to see if someone was going to bring this up.
In Roman law, the way you capitalized something in a document could have
for example, incorrect use of Capitis Diminutio could change you from a free
person into a slave!
OTOH, the Uniform Commercial Code requires certain terms be rendered
which may be accomplished though capitalization, or using bold face, or a
larger font, or contrasting color, etc.
The intervening 2000 years enabled the UCC to exploit more modern typesetting
But the IETF is still living in Roman times.