Dave Crocker wrote:
Some normative statements are placed in a paragraph labeled "NOTE:" so
as to emphasize the requirement of the text. It has been suggested that
that label actually implies less importance, not more. (In regular
prose, a footnote, for example, is indeed secondary to the main text.)
The actual degree of conveyed importance depends on the kind of note.
From http://www.thefreedictionary.com/nota+bene
no-ta be-ne
Abbr. NB
Used to direct attention to something particularly important.
[Latin nota bene, note well : nota, sing. imperative of notare, to
note + bene, well.]