diff --git a/.obsidian/workspace.json b/.obsidian/workspace.json
index 2e5a256..f4d49ef 100644
--- a/.obsidian/workspace.json
+++ b/.obsidian/workspace.json
@@ -13,7 +13,7 @@
             "state": {
               "type": "markdown",
               "state": {
-                "file": "Algo/Séminaire/Chapter 4 - A bit of imperative.md",
+                "file": "Algo/Séminaire/Chapter 5 - Recursivity.md",
                 "mode": "source",
                 "source": false
               }
@@ -81,7 +81,8 @@
       }
     ],
     "direction": "horizontal",
-    "width": 300
+    "width": 300,
+    "collapsed": true
   },
   "right": {
     "id": "b83c16dd7908c658",
@@ -97,7 +98,7 @@
             "state": {
               "type": "backlink",
               "state": {
-                "file": "Algo/Séminaire/Chapter 4 - A bit of imperative.md",
+                "file": "Algo/Séminaire/Chapter 5 - Recursivity.md",
                 "collapseAll": false,
                 "extraContext": false,
                 "sortOrder": "alphabetical",
@@ -114,7 +115,7 @@
             "state": {
               "type": "outgoing-link",
               "state": {
-                "file": "Algo/Séminaire/Chapter 4 - A bit of imperative.md",
+                "file": "Algo/Séminaire/Chapter 5 - Recursivity.md",
                 "linksCollapsed": false,
                 "unlinkedCollapsed": true
               }
@@ -137,7 +138,7 @@
             "state": {
               "type": "outline",
               "state": {
-                "file": "Algo/Séminaire/Chapter 4 - A bit of imperative.md"
+                "file": "Algo/Séminaire/Chapter 5 - Recursivity.md"
               }
             }
           },
@@ -170,12 +171,12 @@
   },
   "active": "0d2d422aa24bb900",
   "lastOpenFiles": [
+    "Algo/Séminaire/Chapter 4 - A bit of imperative.md",
     "Algo/Séminaire/Chapter 3 - Case analysis.md",
     "Algo/Séminaire/Chapter 5 - Recursivity.md",
     "Algo/Séminaire/Exercices seminaire.md",
     "Algo/Séminaire/Introduction.md",
     "Algo/Séminaire/Chapter 2 - Functions.md",
-    "Algo/Séminaire/Chapter 4 - A bit of imperative.md",
     "Algo/Séminaire/Chapter 1 - CAML basics.md",
     "Algo/Séminaire/assets/exception-meme.png",
     "Algo/Séminaire/assets/filter-meme.png",
diff --git a/Algo/Séminaire/Chapter 5 - Recursivity.md b/Algo/Séminaire/Chapter 5 - Recursivity.md
index f41bffe..2107c47 100644
--- a/Algo/Séminaire/Chapter 5 - Recursivity.md	
+++ b/Algo/Séminaire/Chapter 5 - Recursivity.md	
@@ -94,7 +94,7 @@ val add : int -> bool = <fun>
 val even : int -> bool = <fun>
 ```
 
-An accumulator is a thing that try to get our result. In CAML we trying to not use an accumulator in our program. In CAML the syntax for the accumulator (`inv`) is: (exemple with reverse_int exercise. See 4.9 - b)
+An accumulator is a variable used to stock temporary the intermediaries results of a recursive operation. In CAML the syntax for the accumulator (`inv`) is: (exemple with reverse_int exercise. See 4.9 - b)
 ```Ocaml
 # let reverse_int =
 	let rec rev inv = function