diff --git a/src/buffer/index_hashmap.rs b/src/buffer/index_hashmap.rs
index 0593865..72b0625 100644
--- a/src/buffer/index_hashmap.rs
+++ b/src/buffer/index_hashmap.rs
@@ -110,6 +110,11 @@ where
         self.data.write().unwrap().remove(&key);
         self.port.notify(&IndexArea::Set(vec![key]));
     }
+
+    pub fn clear(&mut self) {
+        self.data.write().unwrap().clear();
+        self.port.notify(&IndexArea::Set(self.data.read().unwrap().keys().cloned().collect()));
+    }
 }
 
 //<<<<>>>><<>><><<>><<<*>>><<>><><<>><<<<>>>>
diff --git a/src/view/index/mod.rs b/src/view/index/mod.rs
index 95f0acc..2821e86 100644
--- a/src/view/index/mod.rs
+++ b/src/view/index/mod.rs
@@ -9,7 +9,7 @@ use {
 
 //<<<<>>>><<>><><<>><<<*>>><<>><><<>><<<<>>>>
 
-#[derive(Clone)]
+#[derive(Clone, Debug)]
 pub enum IndexArea<Key> {
     Empty,
     Full,