--- a/src/eric7/Preferences/ConfigurationPages/HelpViewersPage.ui	Wed Mar 06 09:36:09 2024 +0100
+++ b/src/eric7/Preferences/ConfigurationPages/HelpViewersPage.ui	Wed Mar 06 17:00:26 2024 +0100
@@ -6,11 +6,11 @@
    <rect>
     <x>0</x>
     <y>0</y>
-    <width>520</width>
-    <height>177</height>
+    <width>535</width>
+    <height>403</height>
    </rect>
   </property>
-  <layout class="QVBoxLayout" name="verticalLayout_2">
+  <layout class="QVBoxLayout" name="verticalLayout_3">
    <item>
     <widget class="QLabel" name="headerLabel">
      <property name="text">
@@ -121,6 +121,43 @@
     </widget>
    </item>
    <item>
+    <widget class="Line" name="line">
+     <property name="orientation">
+      <enum>Qt::Horizontal</enum>
+     </property>
+    </widget>
+   </item>
+   <item>
+    <widget class="QLabel" name="TextLabel1_2_2_2">
+     <property name="text">
+      <string>&lt;font color=&quot;#FF0000&quot;&gt;&lt;b&gt;Note:&lt;/b&gt; All settings below are activated at the next startup of the application.&lt;/font&gt;</string>
+     </property>
+    </widget>
+   </item>
+   <item>
+    <widget class="QGroupBox" name="groupBox_2">
+     <property name="title">
+      <string>Internal Viewer</string>
+     </property>
+     <layout class="QVBoxLayout" name="verticalLayout_2">
+      <item>
+       <widget class="QCheckBox" name="enforceQTBCheckBox">
+        <property name="toolTip">
+         <string>Select this in order to enforce the use of the QTextBrowser based help viewer implementation.</string>
+        </property>
+        <property name="whatsThis">
+         <string>&lt;b&gt;Enforce 'QTextBrowser' based viewer&lt;/b&gt;
+&lt;p&gt;Select this in order to enforce the use of the QTextBrowser based help viewer implementation. Without this option the viewer implementation will be selected automatically from QWebEngine or QTextBrowser (in that order).&lt;/p&gt;</string>
+        </property>
+        <property name="text">
+         <string>Enforce 'QTextBrowser' based viewer</string>
+        </property>
+       </widget>
+      </item>
+     </layout>
+    </widget>
+   </item>
+   <item>
     <spacer>
      <property name="orientation">
       <enum>Qt::Vertical</enum>