diff --git a/README.md b/README.md
index 28399b6..93eaa70 100644
--- a/README.md
+++ b/README.md
@@ -17,3 +17,4 @@ Library subjugation (got the raw files of the egui_code_editor for some internal
 # 1.0.2 :
 Added find and replace function
 Added multi line tab and shift+tab
+Added Ctrl+E : comment multiline
diff --git a/src/calcifer.rs b/src/calcifer.rs
index f850813..161bfe1 100644
--- a/src/calcifer.rs
+++ b/src/calcifer.rs
@@ -155,7 +155,7 @@ impl super::Calcifer {
 					  	.with_theme(self.theme)
 					  	.with_syntax(tools::to_syntax(&current_tab.language))
 					  	.with_numlines(true)
-					  	.show(ui, &mut current_tab.code, &mut current_tab.history, &mut current_tab.last_cursor, &mut current_tab.scroll_offset, override_cursor);
+					  	.show(ui, &mut current_tab.code, &mut current_tab.saved, &mut current_tab.last_cursor, &mut current_tab.scroll_offset, override_cursor);
 	}
 
     pub fn save_tab(&self) -> Option<PathBuf> {
diff --git a/src/calcifer/code_editor/mod.rs b/src/calcifer/code_editor/mod.rs
index d6552f9..ac4b11c 100644
--- a/src/calcifer/code_editor/mod.rs
+++ b/src/calcifer/code_editor/mod.rs
@@ -237,7 +237,7 @@ impl CodeEditor {
     }
 
     /// Show Code Editor
-    pub fn show(&mut self, ui: &mut egui::Ui, text: &mut String, history: &mut Vec<String>, last_cursor: &mut Option<CCursorRange>, vertical_offset: &mut f32, override_cursor: Option<CCursorRange>) {
+    pub fn show(&mut self, ui: &mut egui::Ui, text: &mut String, saved: &mut bool, last_cursor: &mut Option<CCursorRange>, vertical_offset: &mut f32, override_cursor: Option<CCursorRange>) {
         //let mut text_edit_output: Option<TextEditOutput> = None;
         let mut code_editor = |ui: &mut egui::Ui| {
             ui.horizontal_top(|h| {
@@ -269,6 +269,7 @@ impl CodeEditor {
 
 						if output.response.has_focus() && ui.input(|i| i.key_pressed(egui::Key::Enter)) {
 							println!("line break");
+							//get previous line number of tabs, and 2 charcters before cursor
 						}
 
 						if output.response.has_focus() && ui.input(|i| i.key_pressed(egui::Key::E) && i.modifiers.ctrl) {
@@ -296,17 +297,6 @@ impl CodeEditor {
 							}
 						}
 
-						if output.response.has_focus() && ui.input( |i| i.key_pressed(egui::Key::Z) && i.modifiers.ctrl) {
-							println!("Ctrl+Z");
-							//let current_tab = &mut self.tabs[self.selected_tab.to_index()];
-							//if current_tab.history.len() > 1 {
-								//current_tab.code = current_tab.history[current_tab.history.len() - 2].clone();
-								//current_tab.history.pop();
-							//}
-						}
-					
-						
-
 						if override_cursor != None {
 							output.response.request_focus();
 							output.state.set_ccursor_range(override_cursor);
@@ -332,20 +322,10 @@ impl CodeEditor {
 							}
 						}
 						
-
-						//text_edit_output = Some(output);
-
-						if history.len() < 1 {
-							history.push(text.clone());
+						if previous_text != text.clone() {
+							*saved = false;
 						}
-		
-						//if &current_tab.code != current_tab.history.last().expect("There should be an history") {
-							//current_tab.history.push(current_tab.code.clone());
-							//current_tab.saved = false;
-							//if current_tab.history.len() > super::HISTORY_LENGTH {
-								//current_tab.history.remove(0);
-							//}
-						//}
+						//text_edit_output = Some(output);
                     });
             });
         };
diff --git a/src/main.rs b/src/main.rs
index 0963c36..eb7262a 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -9,7 +9,6 @@ use calcifer::code_editor::themes::DEFAULT_THEMES;
 
 const TERMINAL_HEIGHT : f32 = 200.0;
 const RED : egui::Color32 = egui::Color32::from_rgb(235, 108, 99);
-const HISTORY_LENGTH : usize = 2;
 const SAVE_PATH : &str = "calcifer_save.json";
 
 
diff --git a/src/tools/mod.rs b/src/tools/mod.rs
index fa2f6be..f438f60 100644
--- a/src/tools/mod.rs
+++ b/src/tools/mod.rs
@@ -77,7 +77,6 @@ pub struct Tab {
 	pub code : String,
 	pub language : String,
 	pub saved : bool,
-	pub history : Vec<String>,
 	pub scroll_offset : f32,
 	pub last_cursor : Option<CCursorRange>,
 }
@@ -89,7 +88,6 @@ impl Default for Tab {
 			code: "// Hello there, Master".into(),
 			language: "rs".into(),
 			saved: false,
-			history: vec![],
 			scroll_offset: 0.0,
 			last_cursor: None,
 		}