1.1 --- a/en/concepts.tex	Tue Nov 14 11:42:40 2006 -0800
     1.2 +++ b/en/concepts.tex	Tue Dec 26 14:06:41 2006 -0800
     1.3 @@ -110,6 +110,7 @@
     1.4  arbitrary binary contents; it doesn't need to treat text as special.
     1.5  
     1.6  \subsection{Safe operation}
     1.7 +\label{sec:concepts:txn}
     1.8  
     1.9  Mercurial only ever \emph{appends} data to the end of a revlog file.
    1.10  It never modifies a section of a file after it has written it.  This