- BBTK_INPUT(ViewerNV,nTypeView,"vector of viewer types (default 5 0 1 3 ): -1=Z_2DwithOutAxis 0=Z_2D 1=X_2D 2=Y_2D 3=Plane 4=Sphere 5=3D 6=3Dplane",std::vector<int>,"");
+ BBTK_INPUT(ViewerNV,nTypeView,"vector of viewer types (default 5 0 1 3 ): -1=Z_2DwithOutAxis 0=Z_2D 1=X_2D 2=Y_2D 3=Plane 4=Sphere 5=3D 6=3Dplane 7=3D_empty",std::vector<int>,"");
+ BBTK_INPUT(ViewerNV,ColorFunction,"Optional: set a different color for the viewers 2D",vtkColorTransferFunction*,"");
+ BBTK_INPUT(ViewerNV,WindowLevel,"Optional: set a different Window level by using an other widget",int,"");
+ BBTK_INPUT(ViewerNV,ColorLevel,"Optional: set a different Color level by using an other widget",int,"");