diff --git a/www/content/extensions/building.md b/www/content/extensions/building.md
index ffe47fe3..478242c6 100644
--- a/www/content/extensions/building.md
+++ b/www/content/extensions/building.md
@@ -22,6 +22,8 @@ Extensions can override the following default extension points to add or change
 
 ```javascript
 {
+    init: function(api) {return null;},
+    getSelectors: function() {return null;},
     onEvent : function(name, evt) {return true;},
     transformResponse : function(text, xhr, elt) {return text;},
     isInlineSwap : function(swapStyle) {return false;},