--- a/ldpatch.html	Mon Mar 02 17:20:57 2015 -0500
+++ b/ldpatch.html	Mon Mar 16 11:19:23 2015 -0400
@@ -489,7 +489,7 @@
 
       <p>A conforming <strong>LD Patch document</strong> is a Unicode string that conforms to the grammar defined in the <a href="#concrete-syntax">Concrete Syntax section</a>.</p>
 
-      <p>A conforming <strong>LD Patch parser</strong> is a system capable of parsing LD Patch documents. The resulting abstract concept is called a <strong>Linked Data patch</strong>, or simply <strong>patch</strong> when the context is unambiguous.</p>
+      <p>A conforming <strong>LD Patch parser</strong> is a system capable of parsing LD Patch documents. The resulting abstract concept is called a <strong>Linked Data patch</strong>, or simply <strong>patch</strong> when the context is unambiguous. Parsers should treat Literals as being composed of a lexical form and an optional <a href="http://www.w3.org/TR/rdf11-concepts/#dfn-language-tag">language tag</a> [[!BCP47]] (as used by <a href="http://www.w3.org/TR/turtle/">Turtle</a> [[Turtle]]) or datatype IRI.</p>
 
       <p>A conforming <strong>LD Patch processor</strong> is a system capable of executing a Linked Data patch against an <a class="externalDFN" href="http://www.w3.org/TR/rdf11-concepts/#section-rdf-graph">RDF Graph</a> and whose semantics follow the ones defined in the <a href="#semantics">LD Patch Semantics section</a>. It would either return a new graph or update the input graph in place.</p>