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+/*!\page rfc2119 RFC2119 Keywords
+
+ The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL
+ NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and
+ "OPTIONAL" in this document are to be interpreted as described in
+ <a href="http://www.ietf.org/rfc/rfc2119.txt">RFC 2119.</a>
+
+Specifically, the following definitions are used:
+
+\section MUST
+\anchor REQUIRED
+\anchor SHALL
+ This word, or the terms "REQUIRED" or "SHALL", mean that the
+ definition is an absolute requirement of the specification.
+
+\section MUSTNOT MUST NOT
+\anchor SHALLNOT
+ This phrase, or the phrase "SHALL NOT", mean that the
+ definition is an absolute prohibition of the specification.
+
+\section SHOULD
+\anchor RECOMMENDED
+ This word, or the adjective "RECOMMENDED", mean that there
+ may exist valid reasons in particular circumstances to ignore a
+ particular item, but the full implications must be understood and
+ carefully weighed before choosing a different course.
+
+\section SHOULDNOT SHOULD NOT
+\anchor NOTRECOMMENDED
+ This phrase, or the phrase "NOT RECOMMENDED" mean that
+ there may exist valid reasons in particular circumstances when the
+ particular behavior is acceptable or even useful, but the full
+ implications should be understood and the case carefully weighed
+ before implementing any behavior described with this label.
+
+\section MAY
+\anchor OPTIONAL
+ This word, or the adjective "OPTIONAL", mean that an item is
+ truly optional. One vendor may choose to include the item because a
+ particular marketplace requires it or because the vendor feels that
+ it enhances the product while another vendor may omit the same item.
+ An implementation which does not include a particular option \ref MUST be
+ prepared to interoperate with another implementation which does
+ include the option, though perhaps with reduced functionality. In the
+ same vein an implementation which does include a particular option
+ \ref MUST be prepared to interoperate with another implementation which
+ does not include the option (except, of course, for the feature the
+ option provides.)
+
+
+*/