--- a/cws/cw01.tex	Tue Oct 03 14:29:12 2023 +0100
+++ b/cws/cw01.tex	Tue Oct 03 23:23:57 2023 +0100
@@ -79,7 +79,7 @@
 case classes  for the basic regular expressions, but also explicit case
 classes for
 the extended regular expressions.\footnote{Please call them
-  \code{RANGE}, \code{PLUS}, \code{OPTIONAL}, \code{AND}, \code{NTIMES},
+  \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 3,