Index: doc/LaTeXmacros/common.tex
===================================================================
--- doc/LaTeXmacros/common.tex	(revision 6a86a0abb435b309d7e6353af17bf713dccd18bb)
+++ doc/LaTeXmacros/common.tex	(revision 89ae7f46a494f2bdc682e89b30a0d28f572bee65)
@@ -200,4 +200,5 @@
 \newcommand{\opt}{$_{opt}$\ }
 
+\usepackage{varioref}                 % extended references
 % adjust varioref package with default "section" and "page" titles, and optional title with faraway page numbers
 % \VRef{label} => Section 2.7, \VPageref{label} => page 17