diff -r 3d5ecb8f1f2f -r ea320c9427d2 cws/cw02.tex
--- a/cws/cw02.tex	Thu Nov 11 15:58:22 2021 +0000
+++ b/cws/cw02.tex	Mon Nov 22 11:24:08 2021 +0000
@@ -73,11 +73,11 @@
   \texttt{<},
   \texttt{=},
   \texttt{;},
-  \texttt{,}
+  \texttt{,} (comma),
   \texttt{$\backslash$} and
   \texttt{:}
 
-\item strings are enclosed by \texttt{"\ldots"} and consisting of
+\item strings are enclosed by double quotes, like \texttt{"\ldots"}, and consisting of
   symbols, whitespaces and digits
 \item parentheses are \texttt{(}, \texttt{\{}, \texttt{)} and \texttt{\}}
 \item there are semicolons \texttt{;}