diff -r 352d15782d35 -r 71fc4a7a7039 hws/hw01.tex
--- a/hws/hw01.tex	Sat May 05 10:31:00 2018 +0100
+++ b/hws/hw01.tex	Fri Jun 01 15:28:37 2018 +0100
@@ -22,17 +22,19 @@
 
 \item {\bf (Optional)} Have a look at the crawler programs.
       Can you find a usage for them in your daily programming
-      life? Can you improve them? (For example in cases there
+      life? Can you improve them? For example in cases there
       are links that appear on different recursion levels, the
       crawlers visit such web-pages several times. Can this be
-      avoided?)
+      avoided? Also, the crawlers flag as problematic any page
+      that gives an error, but probably only 404 Not Found
+      errors should be flagged. Can you change that?)
 
 \item Read the handout of the first lecture and the handout
       about notation. Make sure you understand the concepts of
       strings and languages. In the context of the CFL-course,
       what is meant by the term \emph{language}?
 
-    \item Give the definition for regular expressions---this is an
+\item Give the definition for regular expressions---this is an
       inductive datatype. What is the
       meaning of a regular expression? (Hint: The meaning is
       defined recursively.)