diff --git a/apps/opencs/CMakeLists.txt b/apps/opencs/CMakeLists.txt
index c428cd27a..196e899b2 100644
--- a/apps/opencs/CMakeLists.txt
+++ b/apps/opencs/CMakeLists.txt
@@ -85,12 +85,12 @@ opencs_units (view/widget
 
 opencs_units (view/render
     scenewidget worldspacewidget pagedworldspacewidget unpagedworldspacewidget
-    previewwidget editmode
+    previewwidget editmode instancemode
     )
 
 opencs_units_noqt (view/render
     lighting lightingday lightingnight
-    lightingbright object cell terrainstorage
+    lightingbright object cell terrainstorage tagbase
     )
 
 opencs_hdrs_noqt (view/render
diff --git a/apps/opencs/model/settings/usersettings.cpp b/apps/opencs/model/settings/usersettings.cpp
index 24680ada3..3e5ab24d1 100644
--- a/apps/opencs/model/settings/usersettings.cpp
+++ b/apps/opencs/model/settings/usersettings.cpp
@@ -371,6 +371,57 @@ void CSMSettings::UserSettings::buildSettingModelDefaults()
             "list go to the first/last item");
     }
 
+    declareSection ("scene-input", "3D Scene Input");
+    {
+        QString left ("Left Mouse-Button");
+        QString cLeft ("Ctrl-Left Mouse-Button");
+        QString right ("Right Mouse-Button");
+        QString cRight ("Ctrl-Right Mouse-Button");
+        QString middle ("Middle Mouse-Button");
+        QString cMiddle ("Ctrl-Middle Mouse-Button");
+
+        QStringList values;
+        values << left << cLeft << right << cRight << middle << cMiddle;
+
+        Setting *primaryNavigation = createSetting (Type_ComboBox, "p-navi", "Primary Camera Navigation Button");
+        primaryNavigation->setDeclaredValues (values);
+        primaryNavigation->setDefaultValue (left);
+
+        Setting *secondaryNavigation = createSetting (Type_ComboBox, "s-navi", "Secondary Camera Navigation Button");
+        secondaryNavigation->setDeclaredValues (values);
+        secondaryNavigation->setDefaultValue (cLeft);
+
+        Setting *primaryEditing = createSetting (Type_ComboBox, "p-edit", "Primary Editing Button");
+        primaryEditing->setDeclaredValues (values);
+        primaryEditing->setDefaultValue (right);
+
+        Setting *secondaryEditing = createSetting (Type_ComboBox, "s-edit", "Secondary Editing Button");
+        secondaryEditing->setDeclaredValues (values);
+        secondaryEditing->setDefaultValue (cRight);
+
+        Setting *selection = createSetting (Type_ComboBox, "select", "Selection Button");
+        selection->setDeclaredValues (values);
+        selection->setDefaultValue (middle);
+
+        Setting *contextSensitive = createSetting (Type_CheckBox, "context-select", "Context Sensitive Selection");
+        contextSensitive->setDefaultValue ("false");
+
+        Setting *dragMouseSensitivity = createSetting (Type_DoubleSpinBox, "drag-factor",
+            "Mouse sensitivity during drag operations");
+        dragMouseSensitivity->setDefaultValue (1.0);
+        dragMouseSensitivity->setRange (0.001, 100.0);
+
+        Setting *dragWheelSensitivity = createSetting (Type_DoubleSpinBox, "drag-wheel-factor",
+            "Mouse wheel sensitivity during drag operations");
+        dragWheelSensitivity->setDefaultValue (1.0);
+        dragWheelSensitivity->setRange (0.001, 100.0);
+
+        Setting *dragShiftFactor = createSetting (Type_DoubleSpinBox, "drag-shift-factor",
+            "Acceleration factor during drag operations while holding down shift");
+        dragShiftFactor->setDefaultValue (4.0);
+        dragShiftFactor->setRange (0.001, 100.0);
+    }
+
     {
         /******************************************************************
         * There are three types of values:
diff --git a/apps/opencs/view/render/cell.cpp b/apps/opencs/view/render/cell.cpp
index 28a48cfbd..c4f744510 100644
--- a/apps/opencs/view/render/cell.cpp
+++ b/apps/opencs/view/render/cell.cpp
@@ -211,3 +211,24 @@ bool CSVRender::Cell::referenceAdded (const QModelIndex& parent, int start, int
 
     return addObjects (start, end);
 }
+
+void CSVRender::Cell::setSelection (int elementMask, Selection mode)
+{
+    if (elementMask & Element_Reference)
+    {
+        for (std::map<std::string, Object *>::const_iterator iter (mObjects.begin());
+            iter!=mObjects.end(); ++iter)
+        {
+            bool selected = false;
+
+            switch (mode)
+            {
+                case Selection_Clear: selected = false; break;
+                case Selection_All: selected = true; break;
+                case Selection_Invert: selected = !iter->second->getSelected(); break;
+            }
+
+            iter->second->setSelected (selected);
+        }
+    }
+}
diff --git a/apps/opencs/view/render/cell.hpp b/apps/opencs/view/render/cell.hpp
index f4272b887..d26a2d9af 100644
--- a/apps/opencs/view/render/cell.hpp
+++ b/apps/opencs/view/render/cell.hpp
@@ -49,6 +49,15 @@ namespace CSVRender
             /// \return Have any objects been added?
             bool addObjects (int start, int end);
 
+        public:
+
+            enum Selection
+            {
+                Selection_Clear,
+                Selection_All,
+                Selection_Invert
+            };
+
         public:
 
             Cell (CSMWorld::Data& data, osg::Group* rootNode, const std::string& id);
@@ -75,6 +84,8 @@ namespace CSVRender
             /// \return Did this call result in a modification of the visual representation of
             /// this cell?
             bool referenceAdded (const QModelIndex& parent, int start, int end);
+
+            void setSelection (int elementMask, Selection mode);
     };
 }
 
diff --git a/apps/opencs/view/render/editmode.cpp b/apps/opencs/view/render/editmode.cpp
index 8a99ba049..c35b4f354 100644
--- a/apps/opencs/view/render/editmode.cpp
+++ b/apps/opencs/view/render/editmode.cpp
@@ -2,6 +2,11 @@
 
 #include "worldspacewidget.hpp"
 
+CSVRender::WorldspaceWidget& CSVRender::EditMode::getWorldspaceWidget()
+{
+    return *mWorldspaceWidget;
+}
+
 CSVRender::EditMode::EditMode (WorldspaceWidget *worldspaceWidget, const QIcon& icon,
     unsigned int mask, const QString& tooltip, QWidget *parent)
 : ModeButton (icon, tooltip, parent), mWorldspaceWidget (worldspaceWidget), mMask (mask)
@@ -15,4 +20,44 @@ unsigned int CSVRender::EditMode::getInteractionMask() const
 void CSVRender::EditMode::activate (CSVWidget::SceneToolbar *toolbar)
 {
     mWorldspaceWidget->setInteractionMask (mMask);
+    mWorldspaceWidget->clearSelection (~mMask);
 }
+
+void CSVRender::EditMode::updateUserSetting (const QString& name, const QStringList& value)
+{
+
+}
+
+void CSVRender::EditMode::setEditLock (bool locked)
+{
+
+}
+
+void CSVRender::EditMode::primaryEditPressed (osg::ref_ptr<TagBase> tag) {}
+
+void CSVRender::EditMode::secondaryEditPressed (osg::ref_ptr<TagBase> tag) {}
+
+void CSVRender::EditMode::selectPressed (osg::ref_ptr<TagBase> tag) {}
+
+bool CSVRender::EditMode::primaryEditStartDrag (osg::ref_ptr<TagBase> tag)
+{
+    return false;
+}
+
+bool CSVRender::EditMode::secondaryEditStartDrag (osg::ref_ptr<TagBase> tag)
+{
+    return false;
+}
+
+bool CSVRender::EditMode::selectStartDrag (osg::ref_ptr<TagBase> tag)
+{
+    return false;
+}
+
+void CSVRender::EditMode::drag (int diffX, int diffY, double speedFactor) {}
+
+void CSVRender::EditMode::dragCompleted() {}
+
+void CSVRender::EditMode::dragAborted() {}
+
+void CSVRender::EditMode::dragWheel (int diff, double speedFactor) {}
diff --git a/apps/opencs/view/render/editmode.hpp b/apps/opencs/view/render/editmode.hpp
index c3192f8ea..77676d6a3 100644
--- a/apps/opencs/view/render/editmode.hpp
+++ b/apps/opencs/view/render/editmode.hpp
@@ -1,11 +1,14 @@
 #ifndef CSV_RENDER_EDITMODE_H
 #define CSV_RENDER_EDITMODE_H
 
+#include <osg/ref_ptr>
+
 #include "../widget/modebutton.hpp"
 
 namespace CSVRender
 {
     class WorldspaceWidget;
+    class TagBase;
 
     class EditMode : public CSVWidget::ModeButton
     {
@@ -14,6 +17,10 @@ namespace CSVRender
             WorldspaceWidget *mWorldspaceWidget;
             unsigned int mMask;
 
+        protected:
+
+            WorldspaceWidget& getWorldspaceWidget();
+
         public:
 
             EditMode (WorldspaceWidget *worldspaceWidget, const QIcon& icon, unsigned int mask,
@@ -22,6 +29,51 @@ namespace CSVRender
             unsigned int getInteractionMask() const;
 
             virtual void activate (CSVWidget::SceneToolbar *toolbar);
+
+            /// Default-implementation: Do nothing.
+            virtual void updateUserSetting (const QString& name, const QStringList& value);
+
+            /// Default-implementation: Ignored.
+            virtual void setEditLock (bool locked);
+
+            /// Default-implementation: Ignored.
+            virtual void primaryEditPressed (osg::ref_ptr<TagBase> tag);
+
+            /// Default-implementation: Ignored.
+            virtual void secondaryEditPressed (osg::ref_ptr<TagBase> tag);
+
+            /// Default-implementation: Ignored.
+            virtual void selectPressed (osg::ref_ptr<TagBase> tag);
+
+            /// Default-implementation: ignore and return false
+            ///
+            /// \return Drag accepted?
+            virtual bool primaryEditStartDrag (osg::ref_ptr<TagBase> tag);
+
+            /// Default-implementation: ignore and return false
+            ///
+            /// \return Drag accepted?
+            virtual bool secondaryEditStartDrag (osg::ref_ptr<TagBase> tag);
+
+            /// Default-implementation: ignore and return false
+            ///
+            /// \return Drag accepted?
+            virtual bool selectStartDrag (osg::ref_ptr<TagBase> tag);
+
+            /// Default-implementation: ignored
+            virtual void drag (int diffX, int diffY, double speedFactor);
+
+            /// Default-implementation: ignored
+            virtual void dragCompleted();
+
+            /// Default-implementation: ignored
+            ///
+            /// \note dragAborted will not be called, if the drag is aborted via changing
+            /// editing mode
+            virtual void dragAborted();
+
+            /// Default-implementation: ignored
+            virtual void dragWheel (int diff, double speedFactor);
     };
 }
 
diff --git a/apps/opencs/view/render/instancemode.cpp b/apps/opencs/view/render/instancemode.cpp
new file mode 100644
index 000000000..333d91656
--- /dev/null
+++ b/apps/opencs/view/render/instancemode.cpp
@@ -0,0 +1,56 @@
+
+#include "instancemode.hpp"
+
+#include "../../model/settings/usersettings.hpp"
+
+#include "elements.hpp"
+#include "object.hpp"
+#include "worldspacewidget.hpp"
+
+CSVRender::InstanceMode::InstanceMode (WorldspaceWidget *worldspaceWidget, QWidget *parent)
+: EditMode (worldspaceWidget, QIcon (":placeholder"), Element_Reference, "Instance editing",
+  parent), mContextSelect (false)
+{
+
+}
+
+void CSVRender::InstanceMode::activate (CSVWidget::SceneToolbar *toolbar)
+{
+    EditMode::activate (toolbar);
+
+    mContextSelect = CSMSettings::UserSettings::instance().setting ("scene-input/context-select")=="true";
+}
+
+void CSVRender::InstanceMode::updateUserSetting (const QString& name, const QStringList& value)
+{
+    if (name=="scene-input/context-select")
+        mContextSelect = value.at (0)=="true";
+}
+
+void CSVRender::InstanceMode::primaryEditPressed (osg::ref_ptr<TagBase> tag)
+{
+    if (mContextSelect)
+        selectPressed (tag);
+}
+
+void CSVRender::InstanceMode::secondaryEditPressed (osg::ref_ptr<TagBase> tag)
+{
+    if (mContextSelect)
+        selectPressed (tag);
+}
+
+void CSVRender::InstanceMode::selectPressed (osg::ref_ptr<TagBase> tag)
+{
+    if (tag)
+    {
+        if (CSVRender::ObjectTag *objectTag = dynamic_cast<CSVRender::ObjectTag *> (tag.get()))
+        {
+            // hit an Object, toggle its selection state
+            CSVRender::Object* object = objectTag->mObject;
+            object->setSelected (!object->getSelected());
+            return;
+        }
+    }
+
+    getWorldspaceWidget().clearSelection (Element_Reference);
+}
diff --git a/apps/opencs/view/render/instancemode.hpp b/apps/opencs/view/render/instancemode.hpp
new file mode 100644
index 000000000..cc4fd5434
--- /dev/null
+++ b/apps/opencs/view/render/instancemode.hpp
@@ -0,0 +1,30 @@
+#ifndef CSV_RENDER_INSTANCEMODE_H
+#define CSV_RENDER_INSTANCEMODE_H
+
+#include "editmode.hpp"
+
+namespace CSVRender
+{
+    class InstanceMode : public EditMode
+    {
+            Q_OBJECT
+
+            bool mContextSelect;
+
+        public:
+
+            InstanceMode (WorldspaceWidget *worldspaceWidget, QWidget *parent = 0);
+
+            virtual void activate (CSVWidget::SceneToolbar *toolbar);
+
+            virtual void updateUserSetting (const QString& name, const QStringList& value);
+
+            virtual void primaryEditPressed (osg::ref_ptr<TagBase> tag);
+
+            virtual void secondaryEditPressed (osg::ref_ptr<TagBase> tag);
+
+            virtual void selectPressed (osg::ref_ptr<TagBase> tag);
+    };
+}
+
+#endif
diff --git a/apps/opencs/view/render/object.cpp b/apps/opencs/view/render/object.cpp
index f05e311f9..ac96cb283 100644
--- a/apps/opencs/view/render/object.cpp
+++ b/apps/opencs/view/render/object.cpp
@@ -38,6 +38,11 @@ namespace
 }
 
 
+CSVRender::ObjectTag::ObjectTag (Object* object)
+: TagBase (Element_Reference), mObject (object)
+{}
+
+
 void CSVRender::Object::clear()
 {
 }
@@ -124,7 +129,7 @@ CSVRender::Object::Object (CSMWorld::Data& data, osg::Group* parentNode,
     mOutline = new osgFX::Scribe;
     mOutline->addChild(mBaseNode);
 
-    mBaseNode->setUserData(new ObjectHolder(this));
+    mBaseNode->setUserData(new ObjectTag(this));
 
     parentNode->addChild(mBaseNode);
 
diff --git a/apps/opencs/view/render/object.hpp b/apps/opencs/view/render/object.hpp
index 9b3749069..0858a2edb 100644
--- a/apps/opencs/view/render/object.hpp
+++ b/apps/opencs/view/render/object.hpp
@@ -8,8 +8,9 @@
 #include <osg/ref_ptr>
 #include <osg/Referenced>
 
-class QModelIndex;
+#include "tagbase.hpp"
 
+class QModelIndex;
 
 namespace osg
 {
@@ -35,21 +36,19 @@ namespace CSMWorld
 
 namespace CSVRender
 {
-
     class Object;
 
     // An object to attach as user data to the osg::Node, allows us to get an Object back from a Node when we are doing a ray query
-    class ObjectHolder : public osg::Referenced
+    class ObjectTag : public TagBase
     {
-    public:
-        ObjectHolder(Object* obj)
-            : mObject(obj)
-        {
-        }
+        public:
 
-        Object* mObject;
+            ObjectTag (Object* object);
+
+            Object* mObject;
     };
 
+
     class Object
     {
             const CSMWorld::Data& mData;
diff --git a/apps/opencs/view/render/pagedworldspacewidget.cpp b/apps/opencs/view/render/pagedworldspacewidget.cpp
index b0c1e74a9..7403113b3 100644
--- a/apps/opencs/view/render/pagedworldspacewidget.cpp
+++ b/apps/opencs/view/render/pagedworldspacewidget.cpp
@@ -314,6 +314,15 @@ unsigned int CSVRender::PagedWorldspaceWidget::getVisibilityMask() const
     return WorldspaceWidget::getVisibilityMask() | mControlElements->getSelection();
 }
 
+void CSVRender::PagedWorldspaceWidget::clearSelection (int elementMask)
+{
+    for (std::map<CSMWorld::CellCoordinates, Cell *>::iterator iter = mCells.begin();
+        iter!=mCells.end(); ++iter)
+        iter->second->setSelection (elementMask, Cell::Selection_Clear);
+
+    flagAsModified();
+}
+
 CSVWidget::SceneToolToggle *CSVRender::PagedWorldspaceWidget::makeControlVisibilitySelector (
     CSVWidget::SceneToolbar *parent)
 {
diff --git a/apps/opencs/view/render/pagedworldspacewidget.hpp b/apps/opencs/view/render/pagedworldspacewidget.hpp
index 64a0bccd1..d52efd90e 100644
--- a/apps/opencs/view/render/pagedworldspacewidget.hpp
+++ b/apps/opencs/view/render/pagedworldspacewidget.hpp
@@ -79,6 +79,9 @@ namespace CSVRender
 
             virtual unsigned int getVisibilityMask() const;
 
+            /// \param elementMask Elements to be affected by the clear operation
+            virtual void clearSelection (int elementMask);
+
         protected:
 
             virtual void addVisibilitySelectorButtons (CSVWidget::SceneToolToggle2 *tool);
diff --git a/apps/opencs/view/render/scenewidget.cpp b/apps/opencs/view/render/scenewidget.cpp
index fb3bcb3c3..76b3db348 100644
--- a/apps/opencs/view/render/scenewidget.cpp
+++ b/apps/opencs/view/render/scenewidget.cpp
@@ -110,6 +110,8 @@ bool RenderWidget::eventFilter(QObject* obj, QEvent* event)
         keyPressEvent(static_cast<QKeyEvent*>(event));
     if (event->type() == QEvent::KeyRelease)
         keyReleaseEvent(static_cast<QKeyEvent*>(event));
+    if (event->type() == QEvent::Wheel)
+        wheelEvent(static_cast<QWheelEvent *>(event));
 
     // Always pass the event on to GLWidget, i.e. to OSG event queue
     return QObject::eventFilter(obj, event);
diff --git a/apps/opencs/view/render/tagbase.cpp b/apps/opencs/view/render/tagbase.cpp
new file mode 100644
index 000000000..af9a37624
--- /dev/null
+++ b/apps/opencs/view/render/tagbase.cpp
@@ -0,0 +1,9 @@
+
+#include "tagbase.hpp"
+
+CSVRender::TagBase::TagBase (Elements element) : mElement (element) {}
+
+CSVRender::Elements CSVRender::TagBase::getElement() const
+{
+    return mElement;
+}
diff --git a/apps/opencs/view/render/tagbase.hpp b/apps/opencs/view/render/tagbase.hpp
new file mode 100644
index 000000000..874b856c6
--- /dev/null
+++ b/apps/opencs/view/render/tagbase.hpp
@@ -0,0 +1,22 @@
+#ifndef OPENCS_VIEW_TAGBASE_H
+#define OPENCS_VIEW_TAGBASE_H
+
+#include <osg/Referenced>
+
+#include "elements.hpp"
+
+namespace CSVRender
+{
+    class TagBase : public osg::Referenced
+    {
+            Elements mElement;
+
+        public:
+
+            TagBase (Elements element);
+
+            Elements getElement() const;
+    };
+}
+
+#endif
diff --git a/apps/opencs/view/render/unpagedworldspacewidget.cpp b/apps/opencs/view/render/unpagedworldspacewidget.cpp
index 3e1733c81..68f068dac 100644
--- a/apps/opencs/view/render/unpagedworldspacewidget.cpp
+++ b/apps/opencs/view/render/unpagedworldspacewidget.cpp
@@ -102,6 +102,12 @@ bool CSVRender::UnpagedWorldspaceWidget::handleDrop (const std::vector<CSMWorld:
     return true;
 }
 
+void CSVRender::UnpagedWorldspaceWidget::clearSelection (int elementMask)
+{
+    mCell->setSelection (elementMask, Cell::Selection_Clear);
+    flagAsModified();
+}
+
 void CSVRender::UnpagedWorldspaceWidget::referenceableDataChanged (const QModelIndex& topLeft,
     const QModelIndex& bottomRight)
 {
diff --git a/apps/opencs/view/render/unpagedworldspacewidget.hpp b/apps/opencs/view/render/unpagedworldspacewidget.hpp
index d01c3e766..9e6fa97f4 100644
--- a/apps/opencs/view/render/unpagedworldspacewidget.hpp
+++ b/apps/opencs/view/render/unpagedworldspacewidget.hpp
@@ -43,6 +43,9 @@ namespace CSVRender
             virtual bool handleDrop (const std::vector<CSMWorld::UniversalId>& data,
                 DropType type);
 
+            /// \param elementMask Elements to be affected by the clear operation
+            virtual void clearSelection (int elementMask);
+
         private:
 
             virtual void referenceableDataChanged (const QModelIndex& topLeft,
diff --git a/apps/opencs/view/render/worldspacewidget.cpp b/apps/opencs/view/render/worldspacewidget.cpp
index a1f0f6bf2..2789cd9d5 100644
--- a/apps/opencs/view/render/worldspacewidget.cpp
+++ b/apps/opencs/view/render/worldspacewidget.cpp
@@ -9,6 +9,7 @@
 #include <QDropEvent>
 #include <QMouseEvent>
 #include <QKeyEvent>
+#include <QApplication>
 
 #include <osgGA/TrackballManipulator>
 #include <osgGA/FirstPersonManipulator>
@@ -18,6 +19,8 @@
 #include "../../model/world/universalid.hpp"
 #include "../../model/world/idtable.hpp"
 
+#include "../../model/settings/usersettings.hpp"
+
 #include "../widget/scenetoolmode.hpp"
 #include "../widget/scenetooltoggle2.hpp"
 #include "../widget/scenetoolrun.hpp"
@@ -25,10 +28,22 @@
 #include "object.hpp"
 #include "elements.hpp"
 #include "editmode.hpp"
+#include "instancemode.hpp"
+
+namespace
+{
+    static const char * const sMappingSettings[] =
+    {
+        "p-navi", "s-navi",
+        "p-edit", "s-edit",
+        "select",
+        0
+    };
+}
 
 CSVRender::WorldspaceWidget::WorldspaceWidget (CSMDoc::Document& document, QWidget* parent)
 : SceneWidget (document.getData().getResourceSystem(), parent), mSceneElements(0), mRun(0), mDocument(document),
-  mInteractionMask (0)
+  mInteractionMask (0), mEditMode (0), mLocked (false), mDragging (false)
 {
     setAcceptDrops(true);
 
@@ -59,6 +74,17 @@ CSVRender::WorldspaceWidget::WorldspaceWidget (CSMDoc::Document& document, QWidg
         this, SLOT (debugProfileDataChanged (const QModelIndex&, const QModelIndex&)));
     connect (debugProfiles, SIGNAL (rowsAboutToBeRemoved (const QModelIndex&, int, int)),
         this, SLOT (debugProfileAboutToBeRemoved (const QModelIndex&, int, int)));
+
+    for (int i=0; sMappingSettings[i]; ++i)
+    {
+        QString key ("scene-input/");
+        key += sMappingSettings[i];
+        storeMappingSetting (key, CSMSettings::UserSettings::instance().settingValue (key));
+    }
+
+    mDragFactor = CSMSettings::UserSettings::instance().settingValue ("scene-input/drag-factor").toDouble();
+    mDragWheelFactor = CSMSettings::UserSettings::instance().settingValue ("scene-input/drag-wheel-factor").toDouble();
+    mDragShiftFactor = CSMSettings::UserSettings::instance().settingValue ("scene-input/drag-shift-factor").toDouble();
 }
 
 CSVRender::WorldspaceWidget::~WorldspaceWidget ()
@@ -178,11 +204,14 @@ CSVWidget::SceneToolRun *CSVRender::WorldspaceWidget::makeRunTool (
 CSVWidget::SceneToolMode *CSVRender::WorldspaceWidget::makeEditModeSelector (
     CSVWidget::SceneToolbar *parent)
 {
-    CSVWidget::SceneToolMode *tool = new CSVWidget::SceneToolMode (parent, "Edit Mode");
+    mEditMode = new CSVWidget::SceneToolMode (parent, "Edit Mode");
 
-    addEditModeSelectorButtons (tool);
+    addEditModeSelectorButtons (mEditMode);
 
-    return tool;
+    connect (mEditMode, SIGNAL (modeChanged (const std::string&)),
+        this, SLOT (editModeChanged (const std::string&)));
+
+    return mEditMode;
 }
 
 CSVRender::WorldspaceWidget::DropType CSVRender::WorldspaceWidget::getDropType (
@@ -254,6 +283,26 @@ unsigned int CSVRender::WorldspaceWidget::getInteractionMask() const
     return mInteractionMask & getVisibilityMask();
 }
 
+void CSVRender::WorldspaceWidget::updateUserSetting (const QString& name, const QStringList& value)
+{
+    if (!value.isEmpty() && storeMappingSetting (name, value.first()))
+        return;
+
+    if (name=="scene-input/drag-factor")
+        mDragFactor = value.at (0).toDouble();
+    else if (name=="scene-input/drag-wheel-factor")
+        mDragWheelFactor = value.at (0).toDouble();
+    else if (name=="scene-input/drag-shift-factor")
+        mDragShiftFactor = value.at (0).toDouble();
+    else
+        dynamic_cast<CSVRender::EditMode&> (*mEditMode->getCurrent()).updateUserSetting (name, value);
+}
+
+void CSVRender::WorldspaceWidget::setEditLock (bool locked)
+{
+    dynamic_cast<CSVRender::EditMode&> (*mEditMode->getCurrent()).setEditLock (locked);
+}
+
 void CSVRender::WorldspaceWidget::addVisibilitySelectorButtons (
     CSVWidget::SceneToolToggle2 *tool)
 {
@@ -265,9 +314,7 @@ void CSVRender::WorldspaceWidget::addVisibilitySelectorButtons (
 void CSVRender::WorldspaceWidget::addEditModeSelectorButtons (CSVWidget::SceneToolMode *tool)
 {
     /// \todo replace EditMode with suitable subclasses
-    tool->addButton (
-        new EditMode (this, QIcon (":placeholder"), Element_Reference, "Instance editing"),
-        "object");
+    tool->addButton (new InstanceMode (this, tool), "object");
     tool->addButton (
         new EditMode (this, QIcon (":placeholder"), Element_Pathgrid, "Pathgrid editing"),
         "pathgrid");
@@ -288,6 +335,95 @@ void CSVRender::WorldspaceWidget::dragMoveEvent(QDragMoveEvent *event)
     event->accept();
 }
 
+
+bool CSVRender::WorldspaceWidget::storeMappingSetting (const QString& key, const QString& value)
+{
+    const QString prefix = "scene-input/";
+
+    if (key.startsWith (prefix))
+    {
+        QString key2 (key.mid (prefix.length()));
+
+        for (int i=0; sMappingSettings[i]; ++i)
+            if (key2==sMappingSettings[i])
+            {
+                Qt::MouseButton button = Qt::NoButton;
+
+                if (value.endsWith ("Left Mouse-Button"))
+                    button = Qt::LeftButton;
+                else if (value.endsWith ("Right Mouse-Button"))
+                    button = Qt::RightButton;
+                else if (value.endsWith ("Middle Mouse-Button"))
+                    button = Qt::MiddleButton;
+                else
+                    return false;
+
+                bool ctrl = value.startsWith ("Ctrl-");
+
+                mButtonMapping[std::make_pair (button, ctrl)] = sMappingSettings[i];
+                return true;
+            }
+    }
+
+    return false;
+}
+
+osg::ref_ptr<CSVRender::TagBase> CSVRender::WorldspaceWidget::mousePick (QMouseEvent *event)
+{
+    // (0,0) is considered the lower left corner of an OpenGL window
+    int x = event->x();
+    int y = height() - event->y();
+
+    osg::ref_ptr<osgUtil::LineSegmentIntersector> intersector (new osgUtil::LineSegmentIntersector(osgUtil::Intersector::WINDOW, x, y));
+
+    intersector->setIntersectionLimit(osgUtil::LineSegmentIntersector::NO_LIMIT);
+    osgUtil::IntersectionVisitor visitor(intersector);
+
+    visitor.setTraversalMask(getInteractionMask() << 1);
+
+    mView->getCamera()->accept(visitor);
+
+    for (osgUtil::LineSegmentIntersector::Intersections::iterator it = intersector->getIntersections().begin();
+         it != intersector->getIntersections().end(); ++it)
+    {
+        osgUtil::LineSegmentIntersector::Intersection intersection = *it;
+
+        // reject back-facing polygons
+        osg::Vec3f normal = intersection.getWorldIntersectNormal();
+        normal = osg::Matrix::transform3x3(normal, mView->getCamera()->getViewMatrix());
+        if (normal.z() < 0)
+            continue;
+
+        for (std::vector<osg::Node*>::iterator it = intersection.nodePath.begin(); it != intersection.nodePath.end(); ++it)
+        {
+            osg::Node* node = *it;
+            if (osg::ref_ptr<CSVRender::TagBase> tag = dynamic_cast<CSVRender::TagBase *>(node->getUserData()))
+                return tag;
+        }
+
+// ignoring terrain for now
+        // must be terrain, report coordinates
+//        std::cout << "Terrain hit at " << intersection.getWorldIntersectPoint().x() << " " << intersection.getWorldIntersectPoint().y() << std::endl;
+//        return;
+    }
+
+    return osg::ref_ptr<CSVRender::TagBase>();
+}
+
+std::string CSVRender::WorldspaceWidget::mapButton (QMouseEvent *event)
+{
+    std::pair<Qt::MouseButton, bool> phyiscal (
+        event->button(), QApplication::keyboardModifiers() & Qt::ControlModifier);
+
+    std::map<std::pair<Qt::MouseButton, bool>, std::string>::const_iterator iter =
+        mButtonMapping.find (phyiscal);
+
+    if (iter!=mButtonMapping.end())
+        return iter->second;
+
+    return "";
+}
+
 void CSVRender::WorldspaceWidget::dropEvent (QDropEvent* event)
 {
     const CSMWorld::TableMimeData* mime = dynamic_cast<const CSMWorld::TableMimeData*> (event->mimeData());
@@ -352,6 +488,12 @@ void CSVRender::WorldspaceWidget::debugProfileAboutToBeRemoved (const QModelInde
     }
 }
 
+void CSVRender::WorldspaceWidget::editModeChanged (const std::string& id)
+{
+    dynamic_cast<CSVRender::EditMode&> (*mEditMode->getCurrent()).setEditLock (mLocked);
+    mDragging = false;
+}
+
 void CSVRender::WorldspaceWidget::elementSelectionChanged()
 {
     setVisibilityMask (getVisibilityMask());
@@ -365,73 +507,100 @@ void CSVRender::WorldspaceWidget::updateOverlay()
 
 void CSVRender::WorldspaceWidget::mouseMoveEvent (QMouseEvent *event)
 {
-    if(event->buttons() & Qt::RightButton)
+    if (!mDragging)
     {
-        //mMouse->mouseMoveEvent(event);
+        if (mDragMode=="p-navi" || mDragMode=="s-navi")
+        {
+
+        }
+        else if (mDragMode=="p-edit" || mDragMode=="s-edit" || mDragMode=="select")
+        {
+            osg::ref_ptr<TagBase> tag = mousePick (event);
+
+            EditMode& editMode = dynamic_cast<CSVRender::EditMode&> (*mEditMode->getCurrent());
+
+            if (mDragMode=="p-edit")
+                mDragging = editMode.primaryEditStartDrag (tag);
+            else if (mDragMode=="s-edit")
+                mDragging = editMode.secondaryEditStartDrag (tag);
+            else if (mDragMode=="select")
+                mDragging = editMode.selectStartDrag (tag);
+
+            if (mDragging)
+            {
+                mDragX = event->posF().x();
+                mDragY = height() - event->posF().y();
+            }
+        }
     }
+    else
+    {
+        int diffX = event->x() - mDragX;
+        int diffY = (height() - event->y()) - mDragY;
+
+        mDragX = event->x();
+        mDragY = height() - event->y();
+
+        double factor = mDragFactor;
+
+        if (QApplication::keyboardModifiers() & Qt::ShiftModifier)
+            factor *= mDragShiftFactor;
+
+        EditMode& editMode = dynamic_cast<CSVRender::EditMode&> (*mEditMode->getCurrent());
+
+        editMode.drag (diffX, diffY, factor);
+    }
+
     RenderWidget::mouseMoveEvent(event);
 }
 
 void CSVRender::WorldspaceWidget::mousePressEvent (QMouseEvent *event)
 {
-    if (event->button() != Qt::RightButton)
-        return;
+    std::string button = mapButton (event);
 
-    // (0,0) is considered the lower left corner of an OpenGL window
-    int x = event->x();
-    int y = height() - event->y();
+    if (!mDragging)
+        mDragMode = button;
 
-    osg::ref_ptr<osgUtil::LineSegmentIntersector> intersector (new osgUtil::LineSegmentIntersector(osgUtil::Intersector::WINDOW, x, y));
-
-    intersector->setIntersectionLimit(osgUtil::LineSegmentIntersector::NO_LIMIT);
-    osgUtil::IntersectionVisitor visitor(intersector);
-
-    visitor.setTraversalMask(getInteractionMask() << 1);
-
-    mView->getCamera()->accept(visitor);
-
-    for (osgUtil::LineSegmentIntersector::Intersections::iterator it = intersector->getIntersections().begin();
-         it != intersector->getIntersections().end(); ++it)
+    if (button=="p-navi" || button=="s-navi")
     {
-        osgUtil::LineSegmentIntersector::Intersection intersection = *it;
 
-        // reject back-facing polygons
-        osg::Vec3f normal = intersection.getWorldIntersectNormal();
-        normal = osg::Matrix::transform3x3(normal, mView->getCamera()->getViewMatrix());
-        if (normal.z() < 0)
-            continue;
+    }
+    else if (button=="p-edit" || button=="s-edit" || button=="select")
+    {
+        osg::ref_ptr<TagBase> tag = mousePick (event);
 
-        for (std::vector<osg::Node*>::iterator it = intersection.nodePath.begin(); it != intersection.nodePath.end(); ++it)
-        {
-            osg::Node* node = *it;
-            if (CSVRender::ObjectHolder* holder = dynamic_cast<CSVRender::ObjectHolder*>(node->getUserData()))
-            {
-                // hit an Object, toggle its selection state
-                CSVRender::Object* obj = holder->mObject;
-                obj->setSelected(!obj->getSelected());
-                return;
-            }
-        }
+        EditMode& editMode = dynamic_cast<CSVRender::EditMode&> (*mEditMode->getCurrent());
 
-        // must be terrain, report coordinates
-        std::cout << "Terrain hit at " << intersection.getWorldIntersectPoint().x() << " " << intersection.getWorldIntersectPoint().y() << std::endl;
-        return;
+        if (button=="p-edit")
+            editMode.primaryEditPressed (tag);
+        else if (button=="s-edit")
+            editMode.secondaryEditPressed (tag);
+        else if (button=="select")
+            editMode.selectPressed (tag);
     }
 }
 
 void CSVRender::WorldspaceWidget::mouseReleaseEvent (QMouseEvent *event)
 {
-    if(event->button() == Qt::RightButton)
+    if (mDragging)
     {
-        /*
-        if(!getViewport())
+        std::string button = mapButton (event);
+
+        if (mDragMode=="p-navi" || mDragMode=="s-navi")
         {
-            SceneWidget::mouseReleaseEvent(event);
-            return;
+
+        }
+        else if (mDragMode=="p-edit" || mDragMode=="s-edit" || mDragMode=="select")
+        {
+            EditMode& editMode = dynamic_cast<CSVRender::EditMode&> (*mEditMode->getCurrent());
+
+            editMode.dragCompleted();
+            mDragging = false;
         }
-        */
-        //mMouse->mouseReleaseEvent(event);
     }
+
+    mDragMode.clear();
+
     RenderWidget::mouseReleaseEvent(event);
 }
 
@@ -446,15 +615,32 @@ void CSVRender::WorldspaceWidget::mouseDoubleClickEvent (QMouseEvent *event)
 
 void CSVRender::WorldspaceWidget::wheelEvent (QWheelEvent *event)
 {
-    //if(!mMouse->wheelEvent(event))
-        RenderWidget::wheelEvent(event);
+    if (mDragging)
+    {
+        double factor = mDragWheelFactor;
+
+        if (QApplication::keyboardModifiers() & Qt::ShiftModifier)
+            factor *= mDragShiftFactor;
+
+        EditMode& editMode = dynamic_cast<CSVRender::EditMode&> (*mEditMode->getCurrent());
+
+        editMode.dragWheel (event->delta(), factor);
+    }
+
+    RenderWidget::wheelEvent(event);
 }
 
 void CSVRender::WorldspaceWidget::keyPressEvent (QKeyEvent *event)
 {
     if(event->key() == Qt::Key_Escape)
     {
-        //mMouse->cancelDrag();
+        if (mDragging)
+        {
+            EditMode& editMode = dynamic_cast<CSVRender::EditMode&> (*mEditMode->getCurrent());
+
+            editMode.dragAborted();
+            mDragging = false;
+        }
     }
     else
         RenderWidget::keyPressEvent(event);
diff --git a/apps/opencs/view/render/worldspacewidget.hpp b/apps/opencs/view/render/worldspacewidget.hpp
index fe4555820..f5e7970b6 100644
--- a/apps/opencs/view/render/worldspacewidget.hpp
+++ b/apps/opencs/view/render/worldspacewidget.hpp
@@ -1,12 +1,15 @@
 #ifndef OPENCS_VIEW_WORLDSPACEWIDGET_H
 #define OPENCS_VIEW_WORLDSPACEWIDGET_H
 
+#include <map>
+
 #include <boost/shared_ptr.hpp>
 
-#include "scenewidget.hpp"
+#include "../../model/doc/document.hpp"
+#include "../../model/world/tablemimedata.hpp"
 
-#include <apps/opencs/model/doc/document.hpp>
-#include <apps/opencs/model/world/tablemimedata.hpp>
+#include "scenewidget.hpp"
+#include "elements.hpp"
 
 namespace CSMWorld
 {
@@ -23,6 +26,8 @@ namespace CSVWidget
 
 namespace CSVRender
 {
+    class TagBase;
+
     class WorldspaceWidget : public SceneWidget
     {
             Q_OBJECT
@@ -31,6 +36,16 @@ namespace CSVRender
             CSVWidget::SceneToolRun *mRun;
             CSMDoc::Document& mDocument;
             unsigned int mInteractionMask;
+            std::map<std::pair<Qt::MouseButton, bool>, std::string> mButtonMapping;
+            CSVWidget::SceneToolMode *mEditMode;
+            bool mLocked;
+            std::string mDragMode;
+            bool mDragging;
+            int mDragX;
+            int mDragY;
+            double mDragFactor;
+            double mDragWheelFactor;
+            double mDragShiftFactor;
 
         public:
 
@@ -93,14 +108,21 @@ namespace CSVRender
             /// marked for interaction.
             unsigned int getInteractionMask() const;
 
+            virtual void updateUserSetting (const QString& name, const QStringList& value);
+
+            virtual void setEditLock (bool locked);
+
+            CSMDoc::Document& getDocument();
+
+            /// \param elementMask Elements to be affected by the clear operation
+            virtual void clearSelection (int elementMask) = 0;
+
         protected:
 
             virtual void addVisibilitySelectorButtons (CSVWidget::SceneToolToggle2 *tool);
 
             virtual void addEditModeSelectorButtons (CSVWidget::SceneToolMode *tool);
 
-            CSMDoc::Document& getDocument();
-
             virtual void updateOverlay();
 
             virtual void mouseMoveEvent (QMouseEvent *event);
@@ -118,6 +140,13 @@ namespace CSVRender
 
             void dragMoveEvent(QDragMoveEvent *event);
 
+            /// \return Is \a key a button mapping setting? (ignored otherwise)
+            bool storeMappingSetting (const QString& key, const QString& value);
+
+            osg::ref_ptr<TagBase> mousePick (QMouseEvent *event);
+
+            std::string mapButton (QMouseEvent *event);
+
             virtual std::string getStartupInstruction() = 0;
 
         private slots:
@@ -144,6 +173,7 @@ namespace CSVRender
 
             void debugProfileAboutToBeRemoved (const QModelIndex& parent, int start, int end);
 
+            void editModeChanged (const std::string& id);
 
         protected slots:
 
diff --git a/apps/opencs/view/widget/scenetoolmode.cpp b/apps/opencs/view/widget/scenetoolmode.cpp
index 9f963873c..a93bb0556 100644
--- a/apps/opencs/view/widget/scenetoolmode.cpp
+++ b/apps/opencs/view/widget/scenetoolmode.cpp
@@ -71,6 +71,11 @@ void CSVWidget::SceneToolMode::addButton (ModeButton *button, const std::string&
     }
 }
 
+CSVWidget::ModeButton *CSVWidget::SceneToolMode::getCurrent()
+{
+    return mCurrent;
+}
+
 void CSVWidget::SceneToolMode::selected()
 {
     std::map<ModeButton *, std::string>::const_iterator iter =
diff --git a/apps/opencs/view/widget/scenetoolmode.hpp b/apps/opencs/view/widget/scenetoolmode.hpp
index e6f462cf8..6828a2269 100644
--- a/apps/opencs/view/widget/scenetoolmode.hpp
+++ b/apps/opencs/view/widget/scenetoolmode.hpp
@@ -41,6 +41,9 @@ namespace CSVWidget
             /// The ownership of \a button is transferred to *this.
             void addButton (ModeButton *button, const std::string& id);
 
+            /// Will return a 0-pointer only if the mode does not have any buttons yet.
+            ModeButton *getCurrent();
+
         signals:
 
             void modeChanged (const std::string& id);
diff --git a/apps/opencs/view/world/scenesubview.cpp b/apps/opencs/view/world/scenesubview.cpp
index c2f3442f8..753d791c0 100644
--- a/apps/opencs/view/world/scenesubview.cpp
+++ b/apps/opencs/view/world/scenesubview.cpp
@@ -15,6 +15,7 @@
 
 #include "../render/pagedworldspacewidget.hpp"
 #include "../render/unpagedworldspacewidget.hpp"
+#include "../render/editmode.hpp"
 
 #include "../widget/scenetoolbar.hpp"
 #include "../widget/scenetoolmode.hpp"
@@ -121,15 +122,14 @@ CSVWidget::SceneToolbar* CSVWorld::SceneSubView::makeToolbar (CSVRender::Worldsp
     CSVWidget::SceneToolRun *runTool = widget->makeRunTool (toolbar);
     toolbar->addTool (runTool);
 
-    CSVWidget::SceneToolMode *editModeTool = widget->makeEditModeSelector (toolbar);
-    toolbar->addTool (editModeTool);
+    toolbar->addTool (widget->makeEditModeSelector (toolbar));
 
     return toolbar;
 }
 
 void CSVWorld::SceneSubView::setEditLock (bool locked)
 {
-
+    mScene->setEditLock (locked);
 }
 
 void CSVWorld::SceneSubView::setStatusBar (bool show)
@@ -147,6 +147,12 @@ std::string CSVWorld::SceneSubView::getTitle() const
     return mTitle;
 }
 
+void CSVWorld::SceneSubView::updateUserSetting (const QString& name, const QStringList& value)
+{
+    mScene->updateUserSetting (name, value);
+    CSVDoc::SubView::updateUserSetting (name, value);
+}
+
 void CSVWorld::SceneSubView::cellSelectionChanged (const CSMWorld::UniversalId& id)
 {
     setUniversalId(id);
diff --git a/apps/opencs/view/world/scenesubview.hpp b/apps/opencs/view/world/scenesubview.hpp
index a34d71901..2458d58f4 100644
--- a/apps/opencs/view/world/scenesubview.hpp
+++ b/apps/opencs/view/world/scenesubview.hpp
@@ -27,6 +27,7 @@ namespace CSVRender
 namespace CSVWidget
 {
     class SceneToolbar;
+    class SceneToolMode;
 }
 
 namespace CSVWorld
@@ -58,6 +59,8 @@ namespace CSVWorld
 
             virtual std::string getTitle() const;
 
+            virtual void updateUserSetting (const QString& name, const QStringList& value);
+
         private:
 
             void makeConnections(CSVRender::PagedWorldspaceWidget* widget);