Created a label for Validator
diff --git a/org.eclipse.rmf.documentation/rmf-latex/reference-part2.tex b/org.eclipse.rmf.documentation/rmf-latex/reference-part2.tex
index 3b0de7f..e65172d 100644
--- a/org.eclipse.rmf.documentation/rmf-latex/reference-part2.tex
+++ b/org.eclipse.rmf.documentation/rmf-latex/reference-part2.tex
@@ -80,6 +80,7 @@
 
 % -----------------------------------------------------------------------------------
 \subsection{ReqIF Validation}\index{validation}\index{ReqIF validation}
+\label{sec:reqif-validation}
 % -----------------------------------------------------------------------------------
 
 ReqIF is spreading, and partners start handing .reqif and .reqifz files back and forth.  But chances are that the first import of such a file will fail.  What is the problem? Consequent, the free ReqIF-Validator may provide the answer.