Don't cross reference the document index

MLS.tex

@@ -165,7 +165,10 @@
 \clearpage% get the \phantomsection below on the correct page
 \phantomsection
 \addcontentsline{toc}{chapter}{\indexname}%
-\label{document-index}
+% Commenting out the label as a reminder that we haven't found a way to get correct cross referencess to the document index.
+% This is the discussion which made us give up:
+% - https://tex.stackexchange.com/questions/182710/how-to-reference-the-index
+%\label{document-index}
 \printindex
 
 \end{document}

chapters/introduction.tex

@@ -56,7 +56,8 @@ \section{Scope of the Specification}\label{scope-of-the-specification}
 
 \section{Some Definitions}\label{some-definitions}
 
-Explanations of many terms can be found using the document index in \cref{document-index}.
+% Note: Currently not possible to make linked cross reference to the document index.
+Explanations of many terms can be found using the document index.
 Some important terms are defined below.
 
 \begin{definition}[Component]\index{component}