diff --git a/doc/sample/Simple.im b/doc/sample/Simple.im
new file mode 100644
index 0000000..f9a209b
--- /dev/null
+++ b/doc/sample/Simple.im
@@ -0,0 +1,14 @@
+package simple.pkg
+
+use std.io
+
+class Simple
+    - init(name:name age:age)
+        self::name = name.
+        self::age = age!
+
+    - name | ^self::name.
+
+    - age
+        ^self::age!
+end