diff --git a/chapters/functions.tex b/chapters/functions.tex
index 045c859ae..bd31fc21d 100644
--- a/chapters/functions.tex
+++ b/chapters/functions.tex
@@ -2442,29 +2442,30 @@ \subsection{Annotations for External Libraries and Include Files}\label{annotati
 end MyExternalFunctions;
 \end{lstlisting}
 Directory structure:
-\begin{lstlisting}[language=filehierarchy]
-ExternalFunctions
-  package.mo  // Modelica code from above
-  Resources
-    Include   // Include files
-      ExternalFunc1.h    // C header file
-      ExternalFunc2.h    // C header file
-      ExternalFunc3.c    // C source file (not ideal)
-    Library   // Object libraries for different platforms
-      win32
-        ExternalLib1.lib // Static link library for VisualStudio
-        ExternalLib2.lib // statically linking the dynamic link library
-        ExternalLib2.dll // Dynamic link library (with manifest)
-      linux32
-        libExternalLib1.a  // Static link library
-        libExternalLib2.so // Shared library
-    Source    // Sources for library
-      Func1.c            // C source for ExternalLib1.lib
-      Func2.c            // C source for ExternalLib2.lib
-      HelperFunc.c       // C source also included in ExternalLib2.lib
-MyExternalFunctions
-  package.mo
-\end{lstlisting}
+\begin{tabbing}
+\hspace{15em}\=\hspace{1em}\=\kill
+\filename{ExternalFunctions}\\
+\quad\filename{package.mo}                        \>-- \>\emph{Modelica code from above}\\
+\quad\filename{Resources}\\
+\quad\quad\filename{Include}                      \>-- \>\emph{Include files}\\
+\quad\quad\quad\filename{ExternalFunc1.h}         \>-- \>\emph{C header file}\\
+\quad\quad\quad\filename{ExternalFunc2.h}         \>-- \>\emph{C header file}\\
+\quad\quad\quad\filename{ExternalFunc3.c}         \>-- \>\emph{C source file (not ideal)}\\
+\quad\quad\filename{Library}                      \>-- \>\emph{Object libraries for different platforms}\\
+\quad\quad\quad\filename{win32}\\
+\quad\quad\quad\quad\filename{ExternalLib1.lib}   \>-- \>\emph{Static link library for VisualStudio}\\
+\quad\quad\quad\quad\filename{ExternalLib2.lib}   \>   \>\emph{statically linking the dynamic link library}\\
+\quad\quad\quad\quad\filename{ExternalLib2.dll}   \>-- \>\emph{Dynamic link library (with manifest)}\\
+\quad\quad\quad\filename{linux32}\\
+\quad\quad\quad\quad\filename{libExternalLib1.a}  \>-- \>\emph{Static link library}\\
+\quad\quad\quad\quad\filename{libExternalLib2.so} \>-- \>\emph{Shared library}\\
+\quad\quad\filename{Source}                       \>-- \>\emph{Sources for library}\\
+\quad\quad\quad\filename{Func1.c}                 \>-- \>\emph{C source for \filename{ExternalLib1.lib}}\\
+\quad\quad\quad\filename{Func2.c}                 \>-- \>\emph{C source for \filename{ExternalLib2.lib}}\\
+\quad\quad\quad\filename{HelperFunc.c}            \>-- \>\emph{C source also included in \filename{ExternalLib2.lib}}\\
+\filename{MyExternalFunctions}\\
+\quad\filename{package.mo}\\
+\end{tabbing}
 Note that calling the function \lstinline!MyExternalFunctions.ExternalFunc1! will use
 the header and library files from \lstinline!ExternalFunction!, the \lstinline!ExternalFunctions.Example! will not use \filename{ExternalFunc3.c},
 and one library file may contain multiple functions.
diff --git a/mlsshared.sty b/mlsshared.sty
index db4c866fd..fbf8a717c 100644
--- a/mlsshared.sty
+++ b/mlsshared.sty
@@ -13,7 +13,7 @@
 %   white background due to anti-aliasing and similar effects.
 % Warning: Note that changing to a font with different width -- especially a wider one -- means
 % that existing manual line breaks are potentially becoming out of place.
-\usepackage{newtxtt}
+%\usepackage{newtxtt}
 
 \usepackage{listings}
 \usepackage{color}
@@ -179,15 +179,6 @@
         include,pragma,undef,warning}
 }[keywords,comments,strings,directives]
 
-\lstdefinelanguage{filehierarchy}{% Language for use with the lstlisting environment.
-    basicstyle=\upshape\sffamily\smallifpdf, % Font size for displayed code listings.
-    alsoletter={.},
-%   otherkeywords={-, =, +, [, ], (, ), \{, \}, :, *, !},%
-    sensitive=true, % just in case
-    comment=[l]{//}, % comment lines
-    morecomment=[s]{/*}{*/}, % comment blocs
-}[comments]
-
 \lstset{%
   backgroundcolor=\color{white},   % choose the background color
   mathescape=true,