diff --git a/.document b/.document
new file mode 100644
index 0000000..e2b9569
--- /dev/null
+++ b/.document
@@ -0,0 +1,4 @@
+BSDL
+COPYING
+README.md
+lib/
diff --git a/lib/forwardable.rb b/lib/forwardable.rb
index 71b4e6a..5652e72 100644
--- a/lib/forwardable.rb
+++ b/lib/forwardable.rb
@@ -114,6 +114,8 @@ module Forwardable
   # Version of +forwardable.rb+
   VERSION = "1.3.3"
   VERSION.freeze
+
+  # Version for backward compatibility
   FORWARDABLE_VERSION = VERSION
   FORWARDABLE_VERSION.freeze