diff --git a/core.windows/src/org/netbeans/core/windows/resources/mode-properties2_3.dtd b/core.windows/src/org/netbeans/core/windows/resources/mode-properties2_4.dtd
copy from core.windows/src/org/netbeans/core/windows/resources/mode-properties2_3.dtd
copy to core.windows/src/org/netbeans/core/windows/resources/mode-properties2_4.dtd
--- a/core.windows/src/org/netbeans/core/windows/resources/mode-properties2_3.dtd
+++ b/core.windows/src/org/netbeans/core/windows/resources/mode-properties2_4.dtd
@@ -44,7 +44,7 @@
 -->
 
 <!--
--//NetBeans//DTD Mode Properties 2.3//EN
+-//NetBeans//DTD Mode Properties 2.4//EN
 -->
 
 <!-- The root element for mode properties. Consists of name, optional
@@ -78,10 +78,12 @@
 
 <!-- Element name
     "unique" represents unique ID of mode
+    "includes" contains a list of names of other modes that were merged into this one.
 -->
 <!ELEMENT name      EMPTY >
 <!ATTLIST name
     unique CDATA #REQUIRED
+    includes CDATA #IMPLIED
 >
 
 <!-- Element kind
@@ -97,7 +99,7 @@
 -->
 <!ELEMENT slidingSide      EMPTY >
 <!ATTLIST slidingSide
-    side (left | right | bottom) #REQUIRED
+    side (left | right | bottom | top) #REQUIRED
 >
 
 
@@ -114,10 +116,13 @@
 <!-- Element state
     "type" state of mode "joined" (is inside of main window) or "separated" 
     (is in its own native window separated from main window).
+    "minimized" state "true" means that any window opened in this mode is
+    automatically minimized (slided out).
 -->
 <!ELEMENT state      EMPTY >
 <!ATTLIST state
     type (joined | separated) #REQUIRED
+    minimized (true | false) #IMPLIED
 >
 
 <!-- Absolute bounds rectangle of the mode, stored in attributes
diff --git a/openide.windows/apichanges.xml b/openide.windows/apichanges.xml
--- a/openide.windows/apichanges.xml
+++ b/openide.windows/apichanges.xml
@@ -50,6 +50,46 @@
 <apidef name="winsys">Window System API</apidef>
 </apidefs>
 <changes>
+<change id="mode.enhancements">
+    <api name="winsys"/>
+    <summary>Added more attributes to Mode DTD to support new winsys features.</summary>
+    <version major="6" minor="43"/>
+    <date day="1" month="6" year="2011"/>
+    <author login="saubrecht"/>
+    <compatibility addition="yes" source="compatible" semantic="compatible" deprecation="no" deletion="no" modification="no"/>
+    <description>
+        New window system features - sliding bar for minimized windows at the top
+        of the main window, drag and drop of the whole window group and minimization
+        of the whole window group - require small additions to Mode DTD.
+    </description>
+    <issue number="198853"/>
+    <issue number="198854"/>
+</change>
 <change id="mainwindow.custom.background">
     <api name="winsys"/>
     <summary>Allow custom painted background in the main IDE window.</summary>
diff --git a/openide.windows/manifest.mf b/openide.windows/manifest.mf
--- a/openide.windows/manifest.mf
+++ b/openide.windows/manifest.mf
@@ -1,6 +1,6 @@
 Manifest-Version: 1.0
 OpenIDE-Module: org.openide.windows
-OpenIDE-Module-Specification-Version: 6.41
+OpenIDE-Module-Specification-Version: 6.43
 OpenIDE-Module-Localizing-Bundle: org/openide/windows/Bundle.properties
 AutoUpdate-Essential-Module: true