diff --git a/SDT/schema4.0/docs/SDT_UML.uxf b/SDT/schema4.0/docs/SDT_UML.uxf
index 4e5f6285c924906b0d85995d1e7c5e788fc0b420..75d38b49ed36663de6960bf095fb1e4361ff7aec 100644
--- a/SDT/schema4.0/docs/SDT_UML.uxf
+++ b/SDT/schema4.0/docs/SDT_UML.uxf
@@ -377,9 +377,9 @@ fontsize=12</panel_attributes>
   <element>
     <id>UMLClass</id>
     <coordinates>
-      <x>100</x>
+      <x>90</x>
       <y>130</y>
-      <w>220</w>
+      <w>230</w>
       <h>160</h>
     </coordinates>
     <panel_attributes>Domain
@@ -391,7 +391,7 @@ fontsize=12</panel_attributes>
 /* DataTypes : DataType/
 /* ModuleClasses : ModuleClass/
 /* DeviceClasses : DeviceClass/
-/* Products : Product/
+/* ProductClasses : ProductClass/
 fg=blue</panel_attributes>
     <additional_attributes/>
   </element>
@@ -988,7 +988,7 @@ fontsize=12
       <w>220</w>
       <h>160</h>
     </coordinates>
-    <panel_attributes>Product
+    <panel_attributes>ProductClass
 --
 *@ id : Name*
 /@ semanticURI : uri/
@@ -996,7 +996,7 @@ fontsize=12
 /* Properties : Property/
 /* ModuleClasses : ModuleClass/
 /* SubDevices : SubDevice/
-- DeviceClass : Extend
+/- DeviceClass : Extend/
 /- Extend : Extend/
 fg=blue</panel_attributes>
     <additional_attributes/>
diff --git a/SDT/schema4.0/docs/images/SDT_UML_Basic_Elements.png b/SDT/schema4.0/docs/images/SDT_UML_Basic_Elements.png
index a564e4ad9a0790574fba71ceb86d7fa273623d25..7631a92344a860d5a4d0efff3eebd358939db848 100644
Binary files a/SDT/schema4.0/docs/images/SDT_UML_Basic_Elements.png and b/SDT/schema4.0/docs/images/SDT_UML_Basic_Elements.png differ