diff --git a/BasePlugin/PluginFunctions.cc b/BasePlugin/PluginFunctions.cc
index 49d20fe9ba676b498bf6bb05a89e94791e6ecab1..98adf2bf83d6d35a3e1c2207d04ea97f9de801bc 100644
--- a/BasePlugin/PluginFunctions.cc
+++ b/BasePlugin/PluginFunctions.cc
@@ -288,12 +288,12 @@ QPoint mapToLocal( const QPoint _point ) {
 
 void setDrawMode( const unsigned int _mode , int _viewer) {
 
-  if ( _viewer == ACTIVE_VIEWER ) 
+  if ( _viewer == ACTIVE_VIEWER )
     viewerProperties(activeExaminer()).drawMode(_mode);
   else if ( _viewer == ALL_VIEWERS )
-    for ( uint i = 0 ; i < examiner_widgets_.size(); ++i ) 
+    for ( uint i = 0 ; i < examiner_widgets_.size(); ++i )
       viewerProperties(i).drawMode(_mode);
-  else if ( ( _viewer >= 0 ) && _viewer < (int)examiner_widgets_.size() ) 
+  else if ( ( _viewer >= 0 ) && _viewer < (int)examiner_widgets_.size() )
     viewerProperties(_viewer).drawMode(_mode);
   else
     std::cerr << "Requested illegal viewer for setting DrawMode!!" << std::endl;
@@ -417,12 +417,28 @@ Viewer::ViewerProperties& viewerProperties(int _id) {
 
 }
 
-void perspectiveProjection() {
-  examiner_widget_->perspectiveProjection();
+void perspectiveProjection( int _viewer ) {
+  if ( _viewer == ACTIVE_VIEWER ) {
+    examiner_widgets_[activeExaminer_]->perspectiveProjection();
+  } else if ( _viewer == ALL_VIEWERS )
+    for ( uint i = 0 ; i < examiner_widgets_.size(); ++i )
+      examiner_widgets_[i]->perspectiveProjection();
+  else if ( ( _viewer >= 0 ) && _viewer < (int)examiner_widgets_.size() )
+    examiner_widgets_[_viewer]->perspectiveProjection();
+  else
+    std::cerr << "Requested illegal viewer for perspectiveProjection()!!" << std::endl;
 }
 
-void orthographicProjection() {
-  examiner_widget_->orthographicProjection();
+void orthographicProjection( int _viewer ) {
+  if ( _viewer == ACTIVE_VIEWER ) {
+    examiner_widgets_[activeExaminer_]->orthographicProjection();
+  } else if ( _viewer == ALL_VIEWERS )
+    for ( uint i = 0 ; i < examiner_widgets_.size(); ++i )
+      examiner_widgets_[i]->orthographicProjection();
+  else if ( ( _viewer >= 0 ) && _viewer < (int)examiner_widgets_.size() )
+    examiner_widgets_[_viewer]->orthographicProjection();
+  else
+    std::cerr << "Requested illegal viewer for orthographicProjection()!!" << std::endl;
 }
 
 void allowRotation(bool _mode) {
diff --git a/BasePlugin/PluginFunctionsViewControls.hh b/BasePlugin/PluginFunctionsViewControls.hh
index dc7ae8f4b27528d03422c553a259644b7d755a90..09741636362279760c83e944c215901348824753 100644
--- a/BasePlugin/PluginFunctionsViewControls.hh
+++ b/BasePlugin/PluginFunctionsViewControls.hh
@@ -134,7 +134,7 @@ void setScenePos(const ACG::Vec3d& _center  , int _viewer = ALL_VIEWERS);
  *
  */
 DLLEXPORT
-const ACG::Vec3d& sceneCenter( int _viewer = ACTIVE_VIEWER );
+const ACG::Vec3d& sceneCenter( int _viewer = ALL_VIEWERS );
 
 /** \brief Returns the current scene radius from the examiner widget
  *
@@ -201,7 +201,7 @@ void viewAll(int _viewer = ALL_VIEWERS);
  *                0..3 Choose viewer explicitly
  */
 DLLEXPORT
-ACG::Vec3d viewingDirection(int _viewer = ACTIVE_VIEWER);
+ACG::Vec3d viewingDirection(int _viewer = ALL_VIEWERS);
 
 /** \brief Get the current viewer position
  *
@@ -210,7 +210,7 @@ ACG::Vec3d viewingDirection(int _viewer = ACTIVE_VIEWER);
  *                0..3 Choose viewer explicitly
  */
 DLLEXPORT
-ACG::Vec3d eyePos(int _viewer = ACTIVE_VIEWER);
+ACG::Vec3d eyePos(int _viewer = ALL_VIEWERS);
 
 /** \brief Get the current up vector
  *
@@ -219,19 +219,25 @@ ACG::Vec3d eyePos(int _viewer = ACTIVE_VIEWER);
  *                0..3 Choose viewer explicitly
  */
 DLLEXPORT
-ACG::Vec3d upVector(int _viewer = ACTIVE_VIEWER);
+ACG::Vec3d upVector(int _viewer = ALL_VIEWERS);
 
 /** \brief Switch to orthographic Projection
  *
+ * @param _viewer Id of the viewer to use.
+ *                ACTIVE_VIEWER active viewer
+ *                0..3 Choose viewer explicitly
  */
 DLLEXPORT
-void orthographicProjection();
+void orthographicProjection( int _viewer = ALL_VIEWERS );
 
 /** \brief Switch to perspective Projection
  *
+ * @param _viewer Id of the viewer to use.
+ *                ACTIVE_VIEWER active viewer
+ *                0..3 Choose viewer explicitly
  */
 DLLEXPORT
-void perspectiveProjection();
+void perspectiveProjection( int _viewer = ALL_VIEWERS );
 
 /** \brief Set the draw Mode of a Viewer.\n
  *
@@ -253,7 +259,7 @@ void setDrawMode( const unsigned int _mode , int _viewer = ALL_VIEWERS);
  *                0..3 Choose viewer explicitly
  */
 DLLEXPORT
-unsigned int drawMode( int _viewer = ACTIVE_VIEWER );
+unsigned int drawMode( int _viewer = ALL_VIEWERS );
 
 
 /** \brief Set the background color of the examiner widget.