/h3>
<p>As well as sections marked as non-normative, all authoring guidelines, diagrams, examples, and notes in this specification are non-normative. Everything else in this specification is normative.</p>
<p>The key words MAY, MUST, MUST NOT, SHOULD, and SHOULD NOT are to be interpreted as described in [RFC2119].</p>
<h3><a href="#the-spec" name="the-spec"></a>‘the spec’</h3>
<p>Where the phrase ‘the spec’ is used in this document, it refers to a concatenation of the ActivityStreams specification a