diff --git a/src/app.rs b/src/app.rs
index 39a7294..5f41627 100644
--- a/src/app.rs
+++ b/src/app.rs
@@ -331,4 +331,22 @@ impl App {
             self.cursor_offset.x = 0;
         }
     }
+
+    pub fn jump_at_end_line(&mut self) {
+        let pos = self.get_cursor_position();
+        let len = self.content[pos.y].len();
+        let width = self.window_size.width.into();
+
+        if len > width {
+            self.cursor_position.x = width;
+            self.cursor_offset.x = len - width;
+        } else {
+            self.cursor_position.x = len - self.cursor_offset.x;
+        }
+    }
+
+    pub fn jump_at_start_line(&mut self) {
+        self.cursor_position.x = 0;
+        self.cursor_offset.x = 0;
+    }
 }
diff --git a/src/handler.rs b/src/handler.rs
index 2a28af4..6c67907 100644
--- a/src/handler.rs
+++ b/src/handler.rs
@@ -3,7 +3,7 @@ use crossterm::event::{KeyCode, KeyEvent, KeyModifiers};
 
 pub fn handle_key_events(key_event: KeyEvent, app: &mut App) -> AppResult<()> {
     match key_event.modifiers {
-        KeyModifiers::CONTROL => {
+        KeyModifiers::CONTROL || KeyModifiers::ALT => {
             if key_event.code == KeyCode::Char('c') || key_event.code == KeyCode::Char('C') {
                 app.quit();
             }
@@ -11,10 +11,10 @@ pub fn handle_key_events(key_event: KeyEvent, app: &mut App) -> AppResult<()> {
                 app.save_to_file();
             }
             if key_event.code == KeyCode::Left {
-                // TODO: handling
+                app.jump_at_start_line();
             }
             if key_event.code == KeyCode::Right {
-                // TODO: handling
+                app.jump_at_end_line();
             }
         }
         _ => match key_event.code {