--- a/handouts/ho04.tex	Tue Dec 30 21:59:47 2014 +0000
+++ b/handouts/ho04.tex	Wed Dec 31 01:49:20 2014 +0000
@@ -3,6 +3,7 @@
 \usepackage{../langs}
 
 \begin{document}
+\fnote{\copyright{} Christian Urban, 2014}
 
 \section*{Handout 4 (Access Control)}
 
@@ -28,7 +29,8 @@
 and e\underline{\textbf{x}}ecute. Moreover there are three
 user groups to which the modes apply: the owner of the file,
 the group the file is associated with and everybody else. 
-A typical permission of a file owned by \texttt{bob} might look as 
+A typical permission of a file owned by \texttt{bob} 
+being in the group \texttt{staff} might look as 
 follows:
 
 \begin{center}
@@ -41,8 +43,8 @@
 
 \noindent For the moment let us ignore the directory bit. The
 Unix access rules imply that Bob will only have read access to
-this file, even if he is in the group \texttt{staff} and the
-group access permissions allow read and write. Similarly every
+this file, even if he is in the group \texttt{staff} and this
+group's access permissions allow read and write. Similarly every
 member in the \texttt{staff} group who is not \texttt{bob},
 will only have read-write access permissions, not
 read-write-execute.