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diff --git a/README.md b/README.md
index 9a5c008..fda328d 100644
--- a/README.md
+++ b/README.md
@@ -338,6 +338,8 @@ impl Point {
 #### Traits
 Define shared behavior.
 ```zc
+struct Circle { radius: f32; }
+
 trait Drawable {
     fn draw(self);
 }
@@ -345,6 +347,9 @@ trait Drawable {
 impl Drawable for Circle {
     fn draw(self) { ... }
 }
+
+var circle = Circle{};
+var drawable: Drawable = &circle;
 ```
 
 #### Composition