diff --git a/.obsidian/workspace.json b/.obsidian/workspace.json
index 3143e9e..8bbbe1b 100644
--- a/.obsidian/workspace.json
+++ b/.obsidian/workspace.json
@@ -13,7 +13,7 @@
             "state": {
               "type": "markdown",
               "state": {
-                "file": "Algo/Séminaire/Exercices seminaire.md",
+                "file": "Algo/Chapter 0 - A bit of imperative/0.1 - Print.md",
                 "mode": "source",
                 "source": false
               }
@@ -85,7 +85,7 @@
             "state": {
               "type": "backlink",
               "state": {
-                "file": "Algo/Séminaire/Exercices seminaire.md",
+                "file": "Algo/Chapter 0 - A bit of imperative/0.1 - Print.md",
                 "collapseAll": false,
                 "extraContext": false,
                 "sortOrder": "alphabetical",
@@ -102,7 +102,7 @@
             "state": {
               "type": "outgoing-link",
               "state": {
-                "file": "Algo/Séminaire/Exercices seminaire.md",
+                "file": "Algo/Chapter 0 - A bit of imperative/0.1 - Print.md",
                 "linksCollapsed": false,
                 "unlinkedCollapsed": true
               }
@@ -125,7 +125,7 @@
             "state": {
               "type": "outline",
               "state": {
-                "file": "Algo/Séminaire/Exercices seminaire.md"
+                "file": "Algo/Chapter 0 - A bit of imperative/0.1 - Print.md"
               }
             }
           },
@@ -158,11 +158,12 @@
   },
   "active": "c82ce15f72f65a11",
   "lastOpenFiles": [
+    "Algo/Séminaire/Exercices seminaire.md",
+    "Algo/Chapter 0 - A bit of imperative/0.1 - Print.md",
+    "Algo/Chapter 0 - A bit of imperative",
     "Algo/Séminaire/Chapter 3 - Case analysis.md",
     "README.md",
-    "Algo/Séminaire/Exercices seminaire.md",
     "Algo/Séminaire/Weird stuff.md",
-    "Untitled",
     "Algo/Séminaire/Chapter 1 - CAML basics.md",
     "Algo/Séminaire/Chapter 2 - Functions.md",
     "Algo/Séminaire/Introduction.md",
diff --git a/Algo/Chapter 0 - A bit of imperative/0.1 - Print.md b/Algo/Chapter 0 - A bit of imperative/0.1 - Print.md
new file mode 100644
index 0000000..cf2868d
--- /dev/null
+++ b/Algo/Chapter 0 - A bit of imperative/0.1 - Print.md	
@@ -0,0 +1,15 @@
+If we want to print something in CAML, we have to use this structure
+
+```Ocaml
+# print_string "Hello World!";;
+Hello! - : unit=()
+
+# print_int ;;
+-: int -> unit = <fun>
+
+(*expression*)
+# print_[type] [things to print];;
+[things to print] -: unit=()
+```
+
+