In addition to the inline markup, some additional ``block'' markup
is defined to make it easier to bring attention to various bits of
text. The markup described here serves this purpose, and is
intended to be used when marking one or more paragraphs or other
block constructs (such as \verbatim environments).
\begin{notice}[type] \end{notice}
Label some paragraphs as being worthy of additional attention from
the reader. What sort of attention is warrented can be indicated
by specifying the type of the notice. The only values
defined for type are note and warning; these
are equivalent in intent to the inline markup of the same name.
If type is omitted, note is used. Additional values
may be defined in the future.