diff --git a/pendragon.project b/pendragon.project
index 40b5f7f..6c2eb41 100644
--- a/pendragon.project
+++ b/pendragon.project
@@ -1 +1 @@
-{"categories":[{"name":"todo","content":[{"name":"multiple compilation error","description":"// Hello there","id":1},{"name":"if","description":"implémente if avec des guillemets de délimitation","id":1},{"name":"scope variable","description":"// Hello there","id":6},{"name":"while","description":"implémente un while","id":2},{"name":"else","description":"// Hello there","id":7},{"name":"break","description":"// Hello there","id":8},{"name":"continue","description":"// Hello there","id":9},{"name":"compilation","description":"// Hello there","id":3}]},{"name":"in progress","content":[]},{"name":"done","content":[{"name":"comparaison","description":"// Hello there","id":2},{"name":"booleen type","description":"// Hello there","id":4},{"name":"soixante-dix","description":"// Hello there","id":1},{"name":"parenthese comparaison","description":"// Hello there","id":1},{"name":"test comparaison","description":"// Hello there","id":4},{"name":"error ligne compilation","description":"// Hello there","id":2},{"name":"commentaires","description":"// Hello there","id":3},{"name":"compile time verification","description":"odre des termes rpn","id":1},{"name":"test multiple space in texte","description":"// Hello there","id":3},{"name":"test puis in texte","description":"// Hello there","id":2},{"name":"enchainement puis","description":"// Hello there","id":5},{"name":"guillemet mal ferme","description":"// Hello there","id":4},{"name":"display element","description":"for better print","id":6},{"name":"puis à la ligne, alinéa","description":"// Hello there","id":1},{"name":"teste double tiret","description":"// Hello there","id":2},{"name":"teste puis seul","description":"tout seul, seul devant, seul fin","id":3},{"name":"erreur calcul bool/nombre","description":"affiche element precedent lorsque mauvais enchainement","id":1}]},{"name":"bug","content":[]},{"name":"to test","content":[{"name":"tests mod","description":"// Hello there","id":3},{"name":"test variable","description":"// Hello there","id":2}]},{"name":"bonus","content":[{"name":"stop cheating with \"-\"","description":"// Hello there","id":5},{"name":"affiche ligne et position erreur","description":"// Hello there","id":1},{"name":"pour numero de ligne execution","description":"sauvegarde numero de ligne dans la commande\n\ncommande.ligne(12)","id":3},{"name":"standardizer erreur","description":"regarder les texte répétés","id":1}]},{"name":"+","content":[]}]}
\ No newline at end of file
+{"categories":[{"name":"todo","content":[{"name":"if","description":"implémente if avec des guillemets de délimitation","id":1},{"name":"scope variable","description":"// Hello there","id":6},{"name":"while","description":"implémente un while","id":2},{"name":"else","description":"// Hello there","id":7},{"name":"break","description":"// Hello there","id":8},{"name":"continue","description":"// Hello there","id":9},{"name":"compilation","description":"// Hello there","id":3}]},{"name":"in progress","content":[]},{"name":"done","content":[{"name":"comparaison","description":"// Hello there","id":2},{"name":"booleen type","description":"// Hello there","id":4},{"name":"soixante-dix","description":"// Hello there","id":1},{"name":"parenthese comparaison","description":"// Hello there","id":1},{"name":"test comparaison","description":"// Hello there","id":4},{"name":"error ligne compilation","description":"// Hello there","id":2},{"name":"commentaires","description":"// Hello there","id":3},{"name":"compile time verification","description":"odre des termes rpn","id":1},{"name":"test multiple space in texte","description":"// Hello there","id":3},{"name":"test puis in texte","description":"// Hello there","id":2},{"name":"enchainement puis","description":"// Hello there","id":5},{"name":"guillemet mal ferme","description":"// Hello there","id":4},{"name":"display element","description":"for better print","id":6},{"name":"puis à la ligne, alinéa","description":"// Hello there","id":1},{"name":"teste double tiret","description":"// Hello there","id":2},{"name":"teste puis seul","description":"tout seul, seul devant, seul fin","id":3},{"name":"erreur calcul bool/nombre","description":"affiche element precedent lorsque mauvais enchainement","id":1},{"name":"multiple compilation error","description":"// Hello there","id":1},{"name":"tests mod","description":"// Hello there","id":3}]},{"name":"bug","content":[]},{"name":"to test","content":[{"name":"test variable","description":"// Hello there","id":2}]},{"name":"bonus","content":[{"name":"stop cheating with \"-\"","description":"// Hello there","id":5},{"name":"affiche ligne et position erreur","description":"// Hello there","id":1},{"name":"pour numero de ligne execution","description":"sauvegarde numero de ligne dans la commande\n\ncommande.ligne(12)","id":3},{"name":"standardizer erreur","description":"regarder les texte répétés","id":1}]},{"name":"+","content":[]}]}
\ No newline at end of file
diff --git a/src/pendragon/debug.rs b/src/pendragon/debug.rs
index 91bba8f..e42d0e9 100644
--- a/src/pendragon/debug.rs
+++ b/src/pendragon/debug.rs
@@ -187,9 +187,18 @@ impl fmt::Display for Operateur {
 impl fmt::Display for Programme {
 	fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {//'
 		let mut texte: String = format!("variables : {:?}", self.variables);
-		for (index, commande) in self.commandes.iter().enumerate() {
-			texte += &format!("\n#{:2}-{}", index+1, commande);
+		for (index, phrase) in self.contenu.iter().enumerate() {
+			texte += &format!("\n#{:2}-{}", index+1, phrase);
 		}
 		write!(f, "{}", texte)
 	}
+}
+
+impl fmt::Display for Phrase {
+	fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {//'
+		match self {
+			Self::Commande(commande) => write!(f, "{}", commande),
+			Self::Bloc(_bloc) => write!(f, "bloc inconnu"),
+		}
+	}
 }
\ No newline at end of file
diff --git a/src/pendragon/mod.rs b/src/pendragon/mod.rs
index 095b49b..e5c0ecc 100644
--- a/src/pendragon/mod.rs
+++ b/src/pendragon/mod.rs
@@ -130,7 +130,6 @@ pub fn format_de_variable(nom: &str) -> bool {
 
 #[cfg(test)]
 mod test {
-	use std::collections::HashMap;
 	use super::*;
 	
 	#[test]
@@ -148,7 +147,7 @@ mod test {
 		];
 		for commentaire in commentaires {
 			match pendragon.compile(commentaire.into()) {
-				Ok(_) => assert_eq!(pendragon.programme.commandes.len(), 0, "Le commentaire '{}' ne devrait pas générer de commande", commentaire),
+				Ok(_) => assert_eq!(pendragon.programme.contenu.len(), 0, "Le commentaire '{}' ne devrait pas générer de commande", commentaire),
 				Err(erreurs) => {
 					let affichage_erreurs = erreurs.iter().map(|item| format!("{}", item.raison())).collect::<Vec<_>>().join("\n\n");
 					panic!("Erreur de compilation du commentaire '{}' : \n{}", commentaire, affichage_erreurs)
diff --git a/src/pendragon/structure.rs b/src/pendragon/structure.rs
index 329e3ec..ea5ae8e 100644
--- a/src/pendragon/structure.rs
+++ b/src/pendragon/structure.rs
@@ -5,19 +5,19 @@ use super::*;
 
 pub struct Programme {
 	pub variables: HashMap<String, TypeElement>,
-	pub commandes: Vec<Commande>,
+	pub contenu: Vec<Phrase>,
 }
 
 impl Programme {
 	pub fn nouveau() -> Self {
 		Self {
 			variables: HashMap::new(),
-			commandes: vec![],
+			contenu: vec![],
 		}
 	}
 	
 	pub fn ajoute_commande(&mut self, commande: Commande) {
-		self.commandes.push(commande);
+		self.contenu.push(Phrase::Commande(commande));
 	}
 	
 	pub fn ajoute_variable(&mut self, nom: String, type_variable: TypeElement) -> Result<(), ErreurPendragon> {
@@ -54,32 +54,27 @@ impl Programme {
 	
 	pub fn execute(&self) -> Result<(), ErreurPendragon> {
 		let mut variables_globales: HashMap<String, Element> = HashMap::new();
-		for commande in &self.commandes {
-			match commande {
-				Commande::Definis(nom, type_element) => {
-					variables_globales.insert(nom.to_string(), type_element.comme_element());
-				}
-				Commande::Demande(nom) => {
-					let valeur = variables_globales[nom].type_element().demande_valeur(&nom)?;
-					variables_globales.insert(nom.to_string(), valeur);
-				}
-				Commande::Modifie(nom, expression) => {
-					let valeur = match variables_globales[nom].type_element() {
-						TypeElement::Entier => Element::Entier(nombre::calcule_nombre(expression.clone(), &variables_globales)?),
-						TypeElement::Texte => Element::Texte(texte::calcule_texte(expression.clone(), &variables_globales)?),
-						TypeElement::Booleen => Element::Booleen(booleen::calcule_booleen(expression.clone(), &variables_globales)?),
-					};
-					variables_globales.insert(nom.to_string(), valeur);
-				}
-				Commande::Affiche(expression) => {
-					println!("{}", texte::calcule_texte(expression.to_vec(), &variables_globales)?);
-				}
-			}			
+		for phrase in &self.contenu {
+			let Phrase::Commande(commande) = phrase else {
+				println!("doit executer bloc");
+				continue;
+			};
+			commande.execute(&mut variables_globales)?;			
 		}
 		Ok(())
 	}
 }
 
+pub struct Bloc {
+	condition: Vec<Element>,
+	contenu: Vec<Phrase>,
+}
+
+pub enum Phrase {
+	Bloc(Bloc),
+	Commande(Commande),
+}
+
 pub enum Commande {
 	Definis(String, TypeElement),
 	Demande(String),
@@ -87,6 +82,32 @@ pub enum Commande {
 	Affiche(Vec<Element>),
 }
 
+impl Commande {
+	fn execute(&self, variables: &mut HashMap<String, Element>) -> Result<(), ErreurPendragon> {
+		match self {
+			Commande::Definis(nom, type_element) => {
+				variables.insert(nom.to_string(), type_element.comme_element());
+			}
+			Commande::Demande(nom) => {
+				let valeur = variables[nom].type_element().demande_valeur(&nom)?;
+				variables.insert(nom.to_string(), valeur);
+			}
+			Commande::Modifie(nom, expression) => {
+				let valeur = match variables[nom].type_element() {
+					TypeElement::Entier => Element::Entier(nombre::calcule_nombre(expression.clone(), variables)?),
+					TypeElement::Texte => Element::Texte(texte::calcule_texte(expression.clone(), variables)?),
+					TypeElement::Booleen => Element::Booleen(booleen::calcule_booleen(expression.clone(), variables)?),
+				};
+				variables.insert(nom.to_string(), valeur);
+			}
+			Commande::Affiche(expression) => {
+				println!("{}", texte::calcule_texte(expression.to_vec(), variables)?);
+			}
+		}
+		Ok(())
+	}
+}
+
 #[derive(PartialEq, Debug, Clone)]
 pub enum TypeElement {
 	Entier,