diff -r c7e944977e39 -r 68b1a84efce6 cws/cw01.tex
--- a/cws/cw01.tex	Wed Sep 17 14:29:52 2025 +0100
+++ b/cws/cw01.tex	Wed Sep 17 15:11:48 2025 +0100
@@ -81,13 +81,13 @@
   \code{RANGE}, \code{PLUS}, \code{OPTIONAL}, \code{INTER}, \code{NTIMES},
   \code{UPTO}, \code{FROM} and \code{BETWEEN}.} 
   That means do not treat the extended regular expressions
-by just translating them into the basic ones. See also Question 1,
+by just translating them into the basic ones. See also Task 1,
 where you are asked to explicitly give the rules for \textit{nullable}
 and \textit{der} for the extended regular expressions. Something like
 
 \[der\,c\,(r^+) \dn der\,c\,(r\cdot r^*)\]
 
-\noindent is \emph{not} allowed as answer in Question 1 and \emph{not}
+\noindent is \emph{not} allowed as answer in Task 1 and \emph{not}
 allowed in your code.\medskip
 
 \noindent
@@ -116,7 +116,7 @@
 \noindent
 Be careful that your implementation of \textit{nullable} and
 \textit{der} satisfies for every regular expression $r$ the following
-two properties (see also Question 1):
+two properties (see also Task 1):
 
 \begin{itemize}
 \item $\textit{nullable}(r)$ if and only if $[]\in L(r)$
@@ -139,7 +139,7 @@
 %at least a good working day fiddling with a program)?  This is just
 %for my curiosity to estimate what your background is.
 
-\subsection*{Question 1}
+\subsection*{Task 1}
 
 From the lectures you have seen the definitions for the functions
 \textit{nullable} and \textit{der} for the basic regular
@@ -179,7 +179,7 @@
 Does your matcher produce the expected results? Make sure you
 also test corner-cases, like $a^{\{0\}}$!
 
-\subsection*{Question 2}
+\subsection*{Task 2}
 
 As you can see, there are a number of explicit regular expressions
 that deal with single or several characters, for example:
@@ -229,12 +229,12 @@
 
 \noindent
 You can either add the constructor $CFUN$ to your implementation in
-Question 3, or you can implement this questions first
-and then use $CFUN$ instead of \code{RANGE} and \code{CHAR} in Question 3.
+Task 3, or you can implement this questions first
+and then use $CFUN$ instead of \code{RANGE} and \code{CHAR} in Task 3.
 In an ideal world one would do this task first, but this might confuse
 you with what you need to do in the previous question.
 
-\subsection*{Question 3}
+\subsection*{Task 3}
 
 Suppose $[a\mbox{-}z0\mbox{-}9\_\,.\mbox{-}]$ stands for the regular expression
 
@@ -270,7 +270,7 @@
 instead of raw code.\bigskip
 
 
-\subsection*{Question 4}
+\subsection*{Task 4}
 
 Implement the simplification rules in your regular expression matcher.
 Consider the regular expression $/ \cdot * \cdot
@@ -285,7 +285,7 @@
 \item \texttt{"/*test/*test*/"}
 \end{enumerate}
 
-\subsection*{Question 5}
+\subsection*{Task 5}
 
 Let $r_1$ be the regular expression $a\cdot a\cdot a$ and $r_2$ be
 $(a^{\{19,19\}}) \cdot (a^?)$.\medskip
@@ -338,7 +338,7 @@
 \uline{\hfill}\bigskip\bigskip
 
 \noindent
-\textbf{Question 1:}
+\textbf{Task 1:}
 
 \begin{center}
 \def\arraystretch{1.6}  
@@ -378,7 +378,7 @@
 
 
 \noindent
-\textbf{Question 2:}
+\textbf{Task 2:}
 
 \begin{center}
 \def\arraystretch{1.6}    
@@ -398,7 +398,7 @@
 \newpage
 
 \noindent
-\textbf{Question 3 (`mathematical' notation):}
+\textbf{Task 3 (`mathematical' notation):}
 
 \noindent
 \uline{\hfill}\medskip
@@ -416,7 +416,7 @@
 \uline{\hfill}\bigskip\bigskip
 
 \noindent
-\textbf{Question 4:}\medskip
+\textbf{Task 4:}\medskip
 
 \noindent
 \textbf{1)}\; Yes / No\qquad
@@ -426,7 +426,7 @@
 
 
 \noindent
-\textbf{Question 5:}\medskip
+\textbf{Task 5:}\medskip
 
 \def\arraystretch{1.5}
 \begin{tabular}{l|c|c}