diff --git a/library/HTMLPurifier/HTMLModule/Hypertext.php b/library/HTMLPurifier/HTMLModule/Hypertext.php
index 37e29653..6052cfae 100644
--- a/library/HTMLPurifier/HTMLModule/Hypertext.php
+++ b/library/HTMLPurifier/HTMLModule/Hypertext.php
@@ -3,7 +3,7 @@
 require_once 'HTMLPurifier/HTMLModule.php';
 
 /**
- * XHTML 1.1 Hypertext Module, defines hypertext links.
+ * XHTML 1.1 Hypertext Module, defines hypertext links. Core Module.
  */
 class HTMLPurifier_HTMLModule_Hypertext extends HTMLPurifier_HTMLModule
 {
diff --git a/library/HTMLPurifier/HTMLModule/List.php b/library/HTMLPurifier/HTMLModule/List.php
index fa32029e..55c0909c 100644
--- a/library/HTMLPurifier/HTMLModule/List.php
+++ b/library/HTMLPurifier/HTMLModule/List.php
@@ -3,7 +3,7 @@
 require_once 'HTMLPurifier/HTMLModule.php';
 
 /**
- * XHTML 1.1 List Module, defines list-oriented elements.
+ * XHTML 1.1 List Module, defines list-oriented elements. Core Module.
  */
 class HTMLPurifier_HTMLModule_List extends HTMLPurifier_HTMLModule
 {
diff --git a/library/HTMLPurifier/HTMLModule/Presentation.php b/library/HTMLPurifier/HTMLModule/Presentation.php
new file mode 100644
index 00000000..1b05b90b
--- /dev/null
+++ b/library/HTMLPurifier/HTMLModule/Presentation.php
@@ -0,0 +1,33 @@
+<?php
+
+require_once 'HTMLPurifier/HTMLModule.php';
+
+/**
+ * XHTML 1.1 Presentation Module, defines hypertext links. Text Extension Module.
+ */
+class HTMLPurifier_HTMLModule_Presentation extends HTMLPurifier_HTMLModule
+{
+    
+    var $elements = array('b', 'big', 'hr', 'i', 'small', 'sub', 'sup', 'tt');
+    var $info = array();
+    var $content_sets = array(
+        'Block' => 'hr',
+        'Inline' => 'b | big | i | small | sub | sup | tt'
+    );
+    
+    function HTMLPurifier_HTMLModule_Presentation() {
+        foreach ($this->elements as $element) {
+            $this->info[$element] = new HTMLPurifier_ElementDef();
+            $this->info[$element]->attr = array(0 => array('Common'));
+            if ($element == 'hr') {
+                $this->info[$element]->content_model_type = 'empty';
+            } else {
+                $this->info[$element]->content_model = '#PCDATA | Inline';
+                $this->info[$element]->content_model_type = 'optional';
+            }
+        }
+    }
+    
+}
+
+?>
\ No newline at end of file
diff --git a/library/HTMLPurifier/HTMLModule/Text.php b/library/HTMLPurifier/HTMLModule/Text.php
index 35c9d8ed..2b6a9578 100644
--- a/library/HTMLPurifier/HTMLModule/Text.php
+++ b/library/HTMLPurifier/HTMLModule/Text.php
@@ -3,7 +3,7 @@
 require_once 'HTMLPurifier/HTMLModule.php';
 
 /**
- * XHTML 1.1 Text Module, defines basic text containers. Core module.
+ * XHTML 1.1 Text Module, defines basic text containers. Core Module.
  */
 class HTMLPurifier_HTMLModule_Text extends HTMLPurifier_HTMLModule
 {
diff --git a/library/HTMLPurifier/XHTMLDefinition.php b/library/HTMLPurifier/XHTMLDefinition.php
index 38efb64c..f3a730a8 100644
--- a/library/HTMLPurifier/XHTMLDefinition.php
+++ b/library/HTMLPurifier/XHTMLDefinition.php
@@ -9,6 +9,7 @@ require_once 'HTMLPurifier/HTMLModule.php';
 require_once 'HTMLPurifier/HTMLModule/Text.php';
 require_once 'HTMLPurifier/HTMLModule/Hypertext.php';
 require_once 'HTMLPurifier/HTMLModule/List.php';
+require_once 'HTMLPurifier/HTMLModule/Presentation.php';
 
 /**
  * Next-generation HTML definition that will supplant HTMLPurifier_HTMLDefinition
@@ -26,6 +27,7 @@ class HTMLPurifier_XHTMLDefinition extends HTMLPurifier_HTMLDefinition
         $this->modules['Text'] = new HTMLPurifier_HTMLModule_Text();
         $this->modules['Hypertext'] = new HTMLPurifier_HTMLModule_Hypertext();
         $this->modules['List'] = new HTMLPurifier_HTMLModule_List();
+        $this->modules['Presentation'] = new HTMLPurifier_HTMLModule_Presentation();
         
         $this->attr_types = new HTMLPurifier_AttrTypes();
         $this->attr_collection = new HTMLPurifier_AttrCollection();