diff --git a/Support/Library/ofxsParams.cpp b/Support/Library/ofxsParams.cpp
index d437e059b..3253c8453 100644
--- a/Support/Library/ofxsParams.cpp
+++ b/Support/Library/ofxsParams.cpp
@@ -183,6 +183,12 @@ namespace OFX {
     _paramProps.propSetInt(kOfxParamPropEnabled, v);
   }
 
+  void ParamDescriptor::setLayoutHint(const LayoutHintEnum layoutHint)
+  {
+    // This is a nuke ofx extension property, so it's optional.
+    _paramProps.propSetInt(kOfxParamPropLayoutHint, static_cast<int>(layoutHint), false);
+  }
+
   /** @brief set the group param that is the parent of this one, default is to be ungrouped at the root level */
   void 
     ParamDescriptor::setParent(const GroupParamDescriptor &v)
@@ -890,6 +896,13 @@ namespace OFX {
     _paramProps.propSetInt(kOfxParamPropGroupOpen, v, false); // introduced in OFX 1.2
   }
 
+  void GroupParamDescriptor::setAsTab()
+  {
+    // PropGroupIdTab is a nuke extension
+    _paramProps.propSetInt(kFnOfxParamPropGroupIsTab, 1,
+                          false); // this property is an optional extension, don't throw if not present.
+  }
+
   ////////////////////////////////////////////////////////////////////////////////
   // page param descriptor
 
diff --git a/Support/include/ofxsParam.h b/Support/include/ofxsParam.h
index e271bbc0b..e0171b389 100644
--- a/Support/include/ofxsParam.h
+++ b/Support/include/ofxsParam.h
@@ -53,6 +53,7 @@ each represent the actions that can be carried out on those particular OFX objec
 #include <memory>
 #include "ofxsCore.h"
 
+#include "extensions/nuke/fnPublicOfxExtensions.h"
 /** @brief Nasty macro used to define empty protected copy ctors and assign ops */
 #define mDeclareProtectedAssignAndCC(CLASS) \
   CLASS &operator=(const CLASS &) {assert(false); return *this;}	\
@@ -170,6 +171,13 @@ namespace OFX {
 #endif
     };
 
+    enum LayoutHintEnum
+    {
+        eLayoutHintNormal = kOfxParamPropLayoutHintNormal,
+        eLayoutHintDivider = kOfxParamPropLayoutHintDivider,
+        eLayoutHintNoNewLine = kOfxParamPropLayoutHintNoNewLine
+    };
+
     /** @brief Enumerates the differing types of coordinate system for default values */
     enum DefaultCoordinateSystemEnum {
         eCoordinatesCanonical, //!< canonical coordinate system
@@ -239,6 +247,8 @@ namespace OFX {
         bool getHostHasNativeOverlayHandle() const;
         
         void setUseHostNativeOverlayHandle(bool use);
+
+        void setLayoutHint(const LayoutHintEnum layoutHint);
     };
 
     ////////////////////////////////////////////////////////////////////////////////
@@ -636,6 +646,8 @@ namespace OFX {
     public :
         /** @brief whether the initial state of a group is open or closed in a hierarchical layout, defaults to false */
         void setOpen(const bool v);
+
+        void setAsTab();
     };
 
     ////////////////////////////////////////////////////////////////////////////////
diff --git a/include/extensions/nuke/fnPublicOfxExtensions.h b/include/extensions/nuke/fnPublicOfxExtensions.h
new file mode 100755
index 000000000..b575b2791
--- /dev/null
+++ b/include/extensions/nuke/fnPublicOfxExtensions.h
@@ -0,0 +1,157 @@
+//------------------------------------------------------------------------------
+// Apps/Nuke/nuke/src/fnPublicOfxExtensions.h
+//
+// Copyright (c) 2009 The Foundry Visionmongers Ltd.  All Rights Reserved.
+//------------------------------------------------------------------------------
+
+#ifndef _fnPublicOfxExtensions_h_
+#define _fnPublicOfxExtensions_h_
+
+/*
+   Software License :
+
+   Copyright (c) 2009, The Foundry Visionmongers Ltd. All rights reserved.
+
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions are met:
+
+ * Redistributions of source code must retain the above copyright notice,
+      this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright notice,
+      this list of conditions and the following disclaimer in the documentation
+      and/or other materials provided with the distribution.
+ * Neither the name The Foundry Visionmongers Ltd, nor the names of its
+      contributors may be used to endorse or promote products derived from this
+      software without specific prior written permission.
+
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+   ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+   WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+   DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+   ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+   (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+   LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+   ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "ofxImageEffect.h"
+
+/** @brief Whether or not the parameter is transiently hidden
+
+    - Type - bool X 1
+    - Property Set - plugin parameter descriptor (read/write) and instance (read/write)
+    - Default - 0
+    - Valid Values - 0, 1
+        0 - not hidden
+        1 - hidden
+
+   This is a property on all parameters.
+
+ */
+#define kOfxParamPropHidden "OfxParamPropHidden"
+
+/** @brief Layout hint for hierarchical layouts
+
+    - Type - int X 1
+    - Property Set - plugin parameter descriptor (read/write) and instance (read only)
+    - Default - 0
+    - Valid Values - 0,1 or 2
+        0 - for a new line after the parameter
+        1 - for a seperator between this parameter and the one to follow
+        2 - for no new line, continue the next parameter on the same horizontal level
+
+   This is a property on parameters of type ::kOfxParamPropLayoutHint, and tells the group whether it should be open or closed by default.
+
+ */
+#define kOfxParamPropLayoutHint "OfxParamPropLayoutHint"
+
+//   lay out as normal
+#define kOfxParamPropLayoutHintNormal 0
+
+//   put a divider after parameter
+#define kOfxParamPropLayoutHintDivider 1
+
+//   have the next parameter start on the same line as this
+#define kOfxParamPropLayoutHintNoNewLine 2
+
+/** @brief Layout padding for hierarchical views, only pertinent with kOfxParamPropLayoutHint==2
+
+    - Type - int X 1
+    - Property Set - plugin parameter descriptor (read/write) and instance (read only)
+    - Default - 0
+    - Valid Values - any positive integer value
+
+   This is a property on parameters of type ::kOfxParamPropLayoutPadWidth
+   It tells the host how much space (in pixels) to leave between the current parameter and the next parameter in horizontal layouts.
+ */
+#define kOfxParamPropLayoutPadWidth "OfxParamPropLayoutPadWidth"
+
+/** @brief The suggested colour of an overlay colour in an interact.
+
+    - Type - double X 3
+    - Property Set - plugin parameter descriptor (read/write) and instance (read only)
+    - Default - 1.0
+    - Valid Values - greater than or equal to 0.0
+
+   This is a property of an overlay interact instance.
+ */
+#define kOfxPropOverlayColour "OfxPropOverlayColour"
+
+/** @brief Unique user readable version string for that identifies something from other versions
+
+    - Type - string X 1
+    - Property Set - host descriptor (read only), plugin descriptor (read/write)
+    - Default - none, the host needs to set this
+    - Valid Values - ASCII string
+ */
+#define kOfxPropVersionLabel "OfxPropVersionLabel"
+
+/** @brief The displayed named of the host
+
+    - Type - string X 1
+    - Property Set - host descriptor (read only), plugin descriptor (read/write)
+    - Default - none
+    - Valid Values - ASCII string
+ */
+#define kOfxPropHostProductTitle "OfxPropHostProductTitle"
+
+/** @brief The major version of the host
+
+    - Type - int X 1
+    - Property Set - param set instance (read/write)
+    - Default - none
+    - Valid Values - any positive integer values
+ */
+#define kOfxPropHostMajorVersion "OfxPropHostMajorVersion"
+
+/** @brief The minor version of the host
+
+    - Type - int X 1
+    - Property Set - param set instance (read/write)
+    - Default - none
+    - Valid Values - any positive integer values
+ */
+#define kOfxPropHostMinorVersion "OfxPropHostMinorVersion"
+
+/** @brief The build version of the host
+
+    - Type - string X 1
+    - Property Set - host descriptor (read only), plugin descriptor (read/write)
+    - Default - none
+    - Valid Values - ASCII string
+ */
+#define kOfxPropHostBuildVersion "OfxPropHostBuildVersion"
+
+/** @brief Whether to display a group as a tab
+
+    - Type - int X 1
+    - Property Set - plugin parameter descriptor (read/write) and instance (read only)
+    - Default - 0
+    - Valid Values - ASCII string
+ */
+#define kFnOfxParamPropGroupIsTab "FnOfxParamPropGroupIsTab"
+
+
+#endif