I asked,
T> Is it legal to put additional text on the Message-Id: header line to the
T> right of the closing angle bracket? What about between the colon and the
T> left-side angle bracket? Should it be put into quotation marks or paren-
T> theses for safety?
Philip answered,
G> So, the answers to your questions are, respectively, yes, yes, and
G> parentheses.
Thank you, Philip, but I phrased my last question badly. I didn't mean
"Should the comment be put enclosed with (a) quotation marks or (b) paren-
theses?" but rather "Should the comment be enclosed in something like quo-
tation marks or parentheses, or may it be left unwrapped?"