diff --git a/src/core/Buffer.h b/src/core/Buffer.h
index 39d4ac3..78488b2 100644
--- a/src/core/Buffer.h
+++ b/src/core/Buffer.h
@@ -10,8 +10,20 @@ class Buffer
 public:
     bool load_from_file(const char * filename);
 
+    typedef std::shared_ptr<Text> LineType;
+    typedef std::list<LineType> LinesType;
+
+    auto begin() { return m_lines.begin(); }
+    auto end() { return m_lines.end(); }
+    auto cbegin() const { return m_lines.cbegin(); }
+    auto cend() const { return m_lines.cend(); }
+    auto rbegin() { return m_lines.rbegin(); }
+    auto rend() { return m_lines.rend(); }
+    auto crbegin() const { return m_lines.crbegin(); }
+    auto crend() const { return m_lines.crend(); }
+
 protected:
-    std::list<std::shared_ptr<Text>> m_lines;
+    LinesType m_lines;
 };
 
 #endif