diff --git a/EVENTS.txt b/EVENTS.txt
index 37e2203d50..ed461ee9fe 100644
--- a/EVENTS.txt
+++ b/EVENTS.txt
@@ -88,3 +88,9 @@ StartShowLocalNavBlock: Showing the local nav menu
 EndShowLocalNavBlock: At the end of the local nav menu
 - $action: the current action
 
+StartShowHTML: Chance to set document content type, charset, language, DOCTYPE and html element properties
+- $action: the current action
+
+EndShowHTML: Showing after the html element
+- $action: the current action
+
diff --git a/lib/action.php b/lib/action.php
index dd7dd44e7f..9c71a153dd 100644
--- a/lib/action.php
+++ b/lib/action.php
@@ -93,7 +93,10 @@ class Action extends HTMLOutputter // lawsuit
      */
     function showPage()
     {
-        $this->startHTML();
+        if (Event::handle('StartShowHTML', array($this))) {
+            $this->startHTML();
+            Event::handle('EndShowHTML', array($this));
+        }
         $this->showHead();
         $this->showBody();
         $this->endHTML();