diff --git a/README.md b/README.md
index 598d340..ccdc2e8 100644
--- a/README.md
+++ b/README.md
@@ -4,13 +4,11 @@ It's not meant for real-world use but for educational purposes on writing an int
 
 **Features**
 
- * No re-assignment (i.e., once you bind a value, you can't re-assign it)
- * Pattern matching
-    f([]) -> "nothing".
-    f([a]) -> one thing".
- * Imperative I/O
- * Higher-order functions
- * Partial evaluation on curried functions
+* No re-assignment (i.e., once you bind a value, you can't re-assign it)
+* Pattern matching: `f([]) -> "nothing". f([a]) -> one thing".`
+* Imperative I/O
+* Higher-order functions
+* Partial evaluation on curried functions
 
 
 **Hello World!**
diff --git a/ast.hs b/ast.hs
index 360441f..0175454 100644
--- a/ast.hs
+++ b/ast.hs
@@ -1,3 +1,7 @@
+-- AST definition for the Lamb programming language
+-- Copyright (c) 2013 darkf
+-- Licensed under the terms of the zlib license, see LICENSE for details
+
 module AST where
 
 data AST = Add AST AST
diff --git a/interp.hs b/interp.hs
index 082f307..36da3db 100644
--- a/interp.hs
+++ b/interp.hs
@@ -1,3 +1,7 @@
+-- Interpreter for the Lamb programming language
+-- Copyright (c) 2013 darkf
+-- Licensed under the terms of the zlib license, see LICENSE for details
+
 module Interp where
 import Prelude hiding (lookup)
 import qualified Data.Map as M
diff --git a/parser.hs b/parser.hs
index 8477530..2c44ac0 100644
--- a/parser.hs
+++ b/parser.hs
@@ -1,3 +1,7 @@
+-- Parser for the Lamb programming language
+-- Copyright (c) 2013 darkf
+-- Licensed under the terms of the zlib license, see LICENSE for details
+
 module Parser where
 
 import Text.Parsec