Fix classes #13

content/docs/guide/classes.mdx

@@ -7,8 +7,9 @@ icon: Shapes
 Mist introduces `class` as syntactic sugar for a Rust struct with a virtual method table (vtable).
 
 ```mist
-pub class Animal {
+pub class Animal
-    str& name,
+{
+    str& name;
 
     pub constructor(str& name)
     {
@@ -25,19 +26,21 @@ pub class Animal {
 Class fields can have default initializers:
 
 ```mist
-class Player {
+class Player
-    i32 health = 100,
+{
-    str& name,
+    i32 health = 100;
+    str& name;
 }
 ```
 
 ### Inheritance
 
 ```mist
-class Dog : Animal {
+class Dog : Animal
+{
     pub constructor(str& name)
     {
-        super(name);
+        super = Super::new(name);
     }
 
     void speak(&self) override
@@ -56,6 +59,25 @@ void speak(&self) override(Animal)
 }
 ```
 
+### Implementations
+
+You can implement directly on the class body:
+
+```mist
+class Circle
+{
+    constructor() {}
+
+    impl std::fmt::Display
+    {
+        Result<(), std::fmt::Error> fmt(&self, Formatter<'_> f)
+        {
+            write!(f, "●")
+        }
+    }
+}
+```
+
 ### Under the Hood
 
 A class `Dog : Animal` generates: