Replace en-dash by comma, while changing the following 'and' into 'wh…

…ile'

chapters/annotations.tex

@@ -853,7 +853,7 @@ \subsubsection{Text}\doublelabel{text}
   \end{example}
   The form \%\{\emph{par\}} allows component-references, and can be directly
   followed by a letter. Thus \lstinline!%{w}x%{h}! gives the value of \lstinline!w!
-  directly followed by \emph{x} and the value of \lstinline!h! -- and \lstinline!%wxh! gives the value of the
+  directly followed by \emph{x} and the value of \lstinline!h!, while \lstinline!%wxh! gives the value of the
   parameter \lstinline!wxh!. If the parameter does not exist it is an error.
 \item
   \%\% replaced by \%