add comments that demonstrate how rounding should be performed
add comments that demonstrate how rounding should be performed

jmerkow/VTK,demarle/VTK,collects/VTK,aashish24/VTK-old,msmolens/VTK,msmolens/VTK,aashish24/VTK-old,msmolens/VTK,msmolens/VTK,hendradarwin/VTK,SimVascular/VTK,demarle/VTK,mspark93/VTK,candy7393/VTK,keithroe/vtkoptix,sankhesh/VTK,spthaolt/VTK,jeffbaumes/jeffbaumes-vtk,johnkit/vtk-dev,aashish24/VTK-old,ashray/VTK-EVM,hendradarwin/VTK,gram526/VTK,berendkleinhaneveld/VTK,SimVascular/VTK,naucoin/VTKSlicerWidgets,jeffbaumes/jeffbaumes-vtk,aashish24/VTK-old,sumedhasingla/VTK,sgh/vtk,ashray/VTK-EVM,biddisco/VTK,cjh1/VTK,berendkleinhaneveld/VTK,jmerkow/VTK,gram526/VTK,mspark93/VTK,jmerkow/VTK,hendradarwin/VTK,Wuteyan/VTK,biddisco/VTK,mspark93/VTK,johnkit/vtk-dev,mspark93/VTK,collects/VTK,candy7393/VTK,johnkit/vtk-dev,sgh/vtk,jeffbaumes/jeffbaumes-vtk,collects/VTK,gram526/VTK,keithroe/vtkoptix,biddisco/VTK,keithroe/vtkoptix,cjh1/VTK,sumedhasingla/VTK,demarle/VTK,berendkleinhaneveld/VTK,naucoin/VTKSlicerWidgets,Wuteyan/VTK,cjh1/VTK,biddisco/VTK,SimVascular/VTK,jmerkow/VTK,candy7393/VTK,aashish24/VTK-old,berendkleinhaneveld/VTK,jmerkow/VTK,demarle/VTK,msmolens/VTK,demarle/VTK,sumedhasingla/VTK,ashray/VTK-EVM,spthaolt/VTK,ashray/VTK-EVM,Wuteyan/VTK,sankhesh/VTK,aashish24/VTK-old,arnaudgelas/VTK,keithroe/vtkoptix,candy7393/VTK,Wuteyan/VTK,hendradarwin/VTK,collects/VTK,jeffbaumes/jeffbaumes-vtk,keithroe/vtkoptix,SimVascular/VTK,berendkleinhaneveld/VTK,spthaolt/VTK,keithroe/vtkoptix,candy7393/VTK,candy7393/VTK,demarle/VTK,jmerkow/VTK,ashray/VTK-EVM,sumedhasingla/VTK,biddisco/VTK,sumedhasingla/VTK,mspark93/VTK,sankhesh/VTK,msmolens/VTK,Wuteyan/VTK,daviddoria/PointGraphsPhase1,biddisco/VTK,spthaolt/VTK,sumedhasingla/VTK,naucoin/VTKSlicerWidgets,johnkit/vtk-dev,sgh/vtk,demarle/VTK,mspark93/VTK,sumedhasingla/VTK,ashray/VTK-EVM,sankhesh/VTK,daviddoria/PointGraphsPhase1,jmerkow/VTK,naucoin/VTKSlicerWidgets,jeffbaumes/jeffbaumes-vtk,collects/VTK,gram526/VTK,hendradarwin/VTK,gram526/VTK,SimVascular/VTK,Wuteyan/VTK,spthaolt/VTK,demarle/VTK,arnaudgelas/VTK,arnaudgelas/VTK,SimVascular/VTK,ashray/VTK-EVM,cjh1/VTK,berendkleinhaneveld/VTK,naucoin/VTKSlicerWidgets,spthaolt/VTK,hendradarwin/VTK,cjh1/VTK,Wuteyan/VTK,biddisco/VTK,gram526/VTK,msmolens/VTK,johnkit/vtk-dev,arnaudgelas/VTK,gram526/VTK,arnaudgelas/VTK,sankhesh/VTK,sankhesh/VTK,naucoin/VTKSlicerWidgets,SimVascular/VTK,sgh/vtk,SimVascular/VTK,jeffbaumes/jeffbaumes-vtk,daviddoria/PointGraphsPhase1,daviddoria/PointGraphsPhase1,gram526/VTK,sumedhasingla/VTK,spthaolt/VTK,arnaudgelas/VTK,daviddoria/PointGraphsPhase1,johnkit/vtk-dev,keithroe/vtkoptix,berendkleinhaneveld/VTK,ashray/VTK-EVM,cjh1/VTK,sgh/vtk,jmerkow/VTK,keithroe/vtkoptix,sankhesh/VTK,mspark93/VTK,msmolens/VTK,sgh/vtk,daviddoria/PointGraphsPhase1,mspark93/VTK,sankhesh/VTK,hendradarwin/VTK,collects/VTK,candy7393/VTK,johnkit/vtk-dev,candy7393/VTK