diff --git a/index.html b/index.html
index 2347c59..74e89ed 100644
--- a/index.html
+++ b/index.html
@@ -28,7 +28,7 @@ <h2>No Duplication</h2>
       [Exposed=Window]
       interface Duplicated {
         attribute DOMString bar;
-        void doTheFoo();
+        undefined doTheFoo();
       };
       dictionary Duplicated {};
       </pre>
@@ -38,10 +38,10 @@ <h2>No Cross Overload, I'm looking at you WebGL</h2>
       <pre class="idl">
       [Exposed=Window]
       interface BaseInterface {
-        void doTheFoo();
+        undefined doTheFoo();
       };
       interface mixin MyMixin {
-        void doTheFoo(DOMString foo);
+        undefined doTheFoo(DOMString foo);
       };
       BaseInterface includes MyMixin;
       </pre>
@@ -49,19 +49,21 @@ <h2>No Cross Overload, I'm looking at you WebGL</h2>
     <section>
       <h2>My [Constructor] interface</h2>
       <pre class="idl">
-      [Exposed=Window, Constructor] // cause merge conflict 7
+      [Exposed=Window] // cause merge conflict 7
       interface IHaveConstructor {
+        constructor();
         attribute DOMString bar;
-        void doTheFoo();
+        undefined doTheFoo();
       };
       </pre>
     </section>
     <section>
       <h2>My Implicitly Exposed interface</h2>
       <pre class="idl">
+      [Exposed=Window]
       interface ImplicitlyExposed {
         attribute DOMString bar;
-        void doTheFoo();
+        undefined doTheFoo();
       };
       </pre>
     </section>
@@ -71,8 +73,9 @@ <h2>My interface with optional dictionary argument</h2>
       dictionary MyDictionary {
         DOMString myField;
       };
+      [Exposed=Window]
       interface IUseTheDictionary {
-        void doTheFoo(MyDictionary dict);
+        undefined doTheFoo(optional MyDictionary dict = {});
       };
       </pre>
     </section>
@@ -82,7 +85,7 @@ <h2>My interface with incorrect nullable union</h2>
       typedef (MyDictionary or DOMString) MyUnion;
       [Exposed=Window]
       interface IAlsoUseTheDictionary {
-        void doTheFoo(optional MyUnion? dict);
+        undefined doTheFoo(optional MyUnion? dict);
       };
       </pre>
     </section>