--- a/model/prov-dm-constraints.html	Mon Apr 02 08:01:00 2012 +0100
+++ b/model/prov-dm-constraints.html	Mon Apr 02 08:08:18 2012 +0100
@@ -152,37 +152,44 @@
 
     <section id="abstract">
 <p>
-PROV-DM is a data model for provenance that describes
-the entities, people and activities involved in
-producing a piece of data or thing in the world. PROV-DM is
-domain-agnostic, but is equipped with extensibility points allowing
-further domain-specific and application-specific extensions to be
-defined.  PROV-DM is accompanied by PROV-N, a technology-independent
-notation, which allows serializations of PROV-DM
-instances to be created for human consumption, which facilitates the
-mapping of PROV-DM to concrete syntax, and which is used as the basis for a
-formal semantics of PROV-DM.  This document introduces
- further set of concepts underpinning the PROV-DM data model and defines constraints that well-structured provenance descriptions should follow and that provide an interpretation for these descriptions.
+PROV-DM, the PROV data model, is a data model for provenance that describes the entities, people and activities involved in producing a piece of data or thing. PROV-DM is structured in six components, dealing with: (1) entities and activities, and the time at which they were created, used, or ended; (2) agents bearing responsibility for entities that were generated and actities that happened; (3) derivations between entities; (4) properties to link entities that refer to a same thing; (5) collections of entities, whose provenance can itself be tracked; (6) a simple annotation mechanism.</p>
+
+
+<p>
+  This document introduces a
+ further set of concepts underpinning the PROV-DM data model and defines constraints that well-structured provenance descriptions should follow. These constraints help provide an interpretation for provenance descriptions.  They are useful for readers who develop applications that generate provenance or reason over provenance.
 </p>
     </section> 
 
 <section id="sotd">
-<b>This document is released internally by the Provenance Working Group.</b>
-<section id="prov-family">
-<!-- <h3>Prov Family of Specifications</h3>-->
+<h4>PROV Family of Specifications</h4>
 This document is part of the PROV family of specifications, a set of specifications aiming to define the various aspects that are necessary to achieve the vision of inter-operable
-interchange of provenance information in heterogeneous environments such as the Web.   This document defines  the PROV-DM data model for provenance, accompanied with a notation to express
-instances of that data model for human consumption. Other documents are: 
+interchange of provenance information in heterogeneous environments such as the Web.  The specifications are as follows.
 <ul>
-<li> PROV-DM-CONSTRAINTS, a set of constraints applying to the PROV-DM data model,</li>
+<li> PROV-DM, the PROV data model for provenance,</li>
+<li> PROV-DM-CONSTRAINTS, a set of constraints applying to the PROV data model  (this document),</li>
 <li> PROV-N, a notation for provenance aimed at human consumption,</li>
-<li> PROV-O, the provenance ontology:  by means of a mapping of PROV-DM to the OWL2 Web Ontology Language, this specification provides a normative serialization of PROV-DM in RDF</li>
-<li> PROV-AQ, provenance access and query: the mechanisms for accessing and querying provenance; </li>
-<li> PROV-PRIMER: a primer for the PROV-DM provenance data model,</li>
-<li> PROV-SEM: a formal semantics for the PROV-DM provenance data model.</li>
+<li> PROV-O, the PROV ontology, an OWL-RL ontology allowing the mapping of PROV to RDF;</li>
+<li> PROV-AQ, the mechanisms for accessing and querying provenance; </li>
+<li> PROV-PRIMER, a primer for the PROV data model,</li>
+<li> PROV-SEM, a formal semantics for the PROV data model.</li>
+<li> PROV-XML, an XML schema for the PROV data model.</li>
 </ul>
+<h4>How to read the PROV Family of Specifications</h4>
+<ul>
+<li>The primer is the entry point to PROV offering a pedagogical presentation of the provenance model.</li>
+<li>The Linked Data and Semantic Web community should focus on PROV-O defining PROV classes and properties specified in an OWL-RL ontology. For further details, PROV-DM and PROV-DM-CONSTRAINTS specify the constraints applicable to the data model, and its interpretation. PROV-SEM provides a mathematical semantics.</li>
+<li>The XML community should focus on PROV-XML defining an XML schema for PROV-DM. Further details can also be found in PROV-DM, PROV-DM-CONSTRAINTS, and PROV-SEM.</li>
+<li>Developers seeking to retrieve or publish provenance should focus of PROV-AQ.</li>
+<li>Readers seeking to implement other PROV serializations
+should focus on PROV-DM and PROV-DM-CONSTRAINTS.  PROV-O, PROV-N, PROV-XML offer examples of mapping to RDF, text, and XML, respectively.</li>
+</ul>
+
+
+<h4>Fourth Public Working Draft</h4>
+<p>This is the fourth public release of the PROV-DM document. Following feedback, the Working Group has decided to reorganize this document substantially, separating the data model, from its contraints, and the notation used to illustrate it. The PROV-DM release is synchronized with the release of the PROV-O, PROV-PRIMER, PROV-N, PROV-DM-CONSTRAINTS documents. We are now making clear what the entry path to the PROV family of specifications is.</p>
 </section>
-</section>
+
 
 
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