1 files changed, 15 insertions, 0 deletions

diff --git a/report/progression.tex b/report/progression.tex
index 6600430..cf4f3d2 100644
--- a/report/progression.tex
+++ b/report/progression.tex
@@ -204,12 +204,27 @@ to perform actions on a particular one (take, drop, use, etc\ldots).
 
 \subsection{back}
 
+The back command was implemented as part of commit f218bf5fa.
+
 \subsection{back test}
 
+The back command works even with any parameter. We will check this later with
+"zuul-with-enums".
+
 \subsection{back back}
 
+When the user enters back twice, he goes two rooms backward. This is working
+correctly.
+
 \subsection{Stack}
 
+The Stack class represents a last-in-first-out (LIFO) stack of objects. The push()
+method allows to add and element at the top of the stack and the pop() method
+allows to retrieve the top item and removes it.
+
+A condition checks whether the Stack is empty before calling the pop() method,
+so that the program does not throw an Exception. This resolve the case when the
+player is at the starting point.
 
 \section{Zuul with tests}