diff --git a/cours/cours_beamer.cls b/cours/cours_beamer.cls
index bf472e4..468693f 100644
--- a/cours/cours_beamer.cls
+++ b/cours/cours_beamer.cls
@@ -382,43 +382,44 @@
 }{%end
 	\end{block}
 }
-% \NewDocumentEnvironment{exo} { s G{Exercice} }{%begin
-% 	\setbeamercolor{block title}{fg=white,bg=blue!75!black}%
-% 	\IfBooleanTF #1
-% 	{
-% 		\begin{block}{#2\ }
-% 	}{
-% 		\ifthenelse{ \equal{#1}{i} }
-% 			{
-% 				\def\cType{\roman}
-% 			}
-% 			{
-% 				\ifthenelse{ \equal{#1}{I} }
-% 				{
-% 					\def\cType{\Roman}
-% 				}
-% 				{
-% 					\ifthenelse{ \equal{#1}{a} }
-% 					{
-% 						\def\cType{\alph}
-% 					}
-% 					{
-% 						\ifthenelse{ \equal{#1}{A} }
-% 						{
-% 							\def\cType{\Alph}
-% 						}
-% 						{
-% 							\def\cType{\arabic}
-% 						}
-% 					}
-% 				}
-% 			}
-% 		\stepcounter{exercicecounter}
-% 		\begin{block}{#2 \cType{exercicecounter}\ }
-% 	}
-% }{%end
-% 	\end{block}
-% }
+%
+\newcounter{applicationcounter}
+\NewDocumentEnvironment{app} { O{0} G{Application} }{%begin
+  \setbeamercolor{block title}{fg=white,bg=airforceblue!90!white}%
+	\ifthenelse{ \NOT \equal{#1}{0} }{
+		\ifthenelse{ \equal{#1}{i} }
+			{
+				\def\cType{\roman}
+			}
+			{
+				\ifthenelse{ \equal{#1}{I} }
+				{
+					\def\cType{\Roman}
+				}
+				{
+					\ifthenelse{ \equal{#1}{a} }
+					{
+						\def\cType{\alph}
+					}
+					{
+						\ifthenelse{ \equal{#1}{A} }
+						{
+							\def\cType{\Alph}
+						}
+						{
+							\def\cType{\arabic}
+						}
+					}
+				}
+			}
+		\stepcounter{applicationcounter}
+		\begin{block}{#2 \cType{applicationcounter}\ }
+	}{
+		\begin{block}{#2\ }
+	}
+}{%end
+	\end{block}
+}
 
 
 % \includemovie
diff --git a/cours/cours_prof.cls b/cours/cours_prof.cls
index 9e30115..a2630f4 100644
--- a/cours/cours_prof.cls
+++ b/cours/cours_prof.cls
@@ -111,8 +111,8 @@
 \mdtheorem[style=no_framed]{voc}{Vocabulaire}
 \mdtheorem[style=no_framed]{rmq}{Remarque}
 \mdtheorem[style=framed]{exe}{Exemple}
-\mdtheorem[style=dash_framed]{ex}{Exercice - Exemple}
 \mdtheorem[style=dash_framed]{exo}{Exercice}
+\mdtheorem[style=dash_framed]{app}{Application}
 \mdtheorem[style=dash_framed]{met}{Méthode}
 %--%