diff --git a/plugins/phorum/htmlpurifier.php b/plugins/phorum/htmlpurifier.php
index 9f780aaf..1fb2212e 100644
--- a/plugins/phorum/htmlpurifier.php
+++ b/plugins/phorum/htmlpurifier.php
@@ -47,6 +47,11 @@ function phorum_htmlpurifier_format($data)
                 continue;
             }
             
+            if (isset($_GET['purge'])) {
+                // purge the cache
+                unset($message['meta']['body_cache']);
+            }
+            
             if (
                 isset($message['meta']['body_cache']) &&
                 isset($message['meta']['body_cache_serial']) &&
@@ -201,3 +206,14 @@ function phorum_htmlpurifier_before_editor($message) {
     return $message;
 }
 
+function phorum_htmlpurifier_editor_after_subject() {
+    if (!empty($GLOBALS['PHORUM']['mod_htmlpurifier']['wysiwyg'])) return;
+    ?><tr><td colspan="2" style="padding:1em 0.3em;">
+  HTML input is <strong>on</strong>. Make sure you escape all HTML and
+  angled-brackets with &amp;lt; and &amp;gt; (you can also use CDATA
+  tags, simply wrap the suspect text with
+&lt;![CDATA[<em>text</em>]]&gt;. Paragraphs will only be applied to 
+double-spaces; single-spaces will not generate <tt>&lt;br&gt;</tt> tags.
+    </td></tr><?php
+}
+
diff --git a/plugins/phorum/info.txt b/plugins/phorum/info.txt
index db06aa8d..ed2f4ae5 100644
--- a/plugins/phorum/info.txt
+++ b/plugins/phorum/info.txt
@@ -3,5 +3,6 @@ hook:  quote|phorum_htmlpurifier_quote
 hook:  posting_custom_action|phorum_htmlpurifier_posting
 hook:  common|phorum_htmlpurifier_common
 hook:  before_editor|phorum_htmlpurifier_before_editor
+hook:  tpl_editor_after_subject|phorum_htmlpurifier_editor_after_subject
 title: HTML Purifier Phorum Mod
 desc:  This module enables standards-compliant HTML filtering on Phorum. Please check migrate.bbcode.php before enabling this mod.
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