Include 'at-risk' text for (1) GRAPH keyword and (2) bare default graph
authorAndy Seaborne <andy.seaborne@apache.org>
Sat, 31 Aug 2013 15:31:35 +0100
changeset 1043 2658d5f94395
parent 1042 554abd1e78cd
child 1044 baeb5676942b
Include 'at-risk' text for (1) GRAPH keyword and (2) bare default graph
trig/index.html
--- a/trig/index.html	Sat Aug 31 15:16:29 2013 +0100
+++ b/trig/index.html	Sat Aug 31 15:31:35 2013 +0100
@@ -273,7 +273,41 @@
         </section>
 
 		<section id="sec-grammar">
-			<h2>TriG Grammar</h2>
+		  <h2>TriG Grammar</h2>
+
+
+              <p>The RDF Working Group has included the following
+                features; these may be removed due to implementor feedback.
+              </p>
+
+              <p>Feedback, both positive and negative, is invited by 
+                sending email to mailing list 
+                <a href="mailto:public-rdf-comm[email protected]"
+                   >[email protected]</a>
+                (<a
+href="mailto:[email protected]?subject=subscribe">subscribe</a>, 
+                <a href="http://lists.w3.org/Archives/Public/public-rdf-comments/">archives</a>).</p>              
+
+              <div class="atrisk"><p class="atrisktext">Feature At Risk</p>
+                <p>The inclusion of the keyword <tt>GRAPH</tt> at the start
+                  of a named graph to align with SPARQL.
+                </p>
+                <p>Previous
+                  publications of Turtle and TriG 
+                  already included <tt>PREFIX</tt> and <tt>BASE</tt> keywords.
+                </p>
+              </div>
+
+              <div class="atrisk"><p class="atrisktext">Feature At Risk</p>
+            	<p>This grammar allows the default graph to be specified
+                  without requiring enclosing <tt>{</tt>...<tt>}</tt>.</p>
+                <p>This means a Turtle document is valid as a TriG document
+                  and describes an RDF dataset with a default graph
+                  containing the triples described, and no named graphs.
+                </p>
+              </div>
+
+
           <p>A TriG document is a
           Unicode[[!UNICODE]]
           character string encoded in UTF-8.
@@ -467,7 +501,8 @@
 
           </section>
 			<section id="grammar-ebnf">
-				<h3>Grammar</h3>
+			  <h3>Grammar</h3>
+
             <p>The <abbr title="Extended Backus–Naur Form">EBNF</abbr> used here is defined in XML 1.0
             [[!EBNF-NOTATION]]. Production labels consisting of a number and a final 'g' are unique to TriG. All Production labels consisting of only a number reference the production with that number in the Turtle grammar [[turtle]]. Production labels consisting of a number and a final 's', e.g. [<a href="http://www.w3.org/TR/sparql11-query/#rRDFLiteral"><span class="prodNo">60s</span></a>], reference the production with that number in the <a href="http://www.w3.org/TR/sparql11-query/#sparqlGrammar">SPARQL Query Language for RDF grammar</a> [[RDF-SPARQL-QUERY]].
             </p>