--- a/cws/cw05.tex	Sat Dec 19 00:13:58 2020 +0000
+++ b/cws/cw05.tex	Sat Dec 19 00:21:13 2020 +0000
@@ -219,7 +219,8 @@
 \item \textbf{Build-In Functions}: The `prelude' comes
   with several build-in functions: \texttt{new\_line()},
   \texttt{skip}, \texttt{print\_int(n)}, \texttt{print\_space()}
-  and \texttt{print\_star()}.
+  and \texttt{print\_star()}. You can find the `prelude' for
+  example in the file \texttt{sqr.ll}.
 \end{itemize}  
 
 \end{document}