DOC: added some comments
DOC: added some comments

cpatrick/ITK-RemoteIO,PlutoniumHeart/ITK,spinicist/ITK,GEHC-Surgery/ITK,fbudin69500/ITK,hjmjohnson/ITK,LucHermitte/ITK,CapeDrew/DITK,fuentesdt/InsightToolkit-dev,hjmjohnson/ITK,jcfr/ITK,rhgong/itk-with-dom,ajjl/ITK,spinicist/ITK,thewtex/ITK,CapeDrew/DITK,zachary-williamson/ITK,eile/ITK,itkvideo/ITK,hendradarwin/ITK,LucasGandel/ITK,Kitware/ITK,msmolens/ITK,cpatrick/ITK-RemoteIO,GEHC-Surgery/ITK,eile/ITK,hinerm/ITK,wkjeong/ITK,Kitware/ITK,fbudin69500/ITK,msmolens/ITK,rhgong/itk-with-dom,fedral/ITK,itkvideo/ITK,zachary-williamson/ITK,thewtex/ITK,itkvideo/ITK,InsightSoftwareConsortium/ITK,hinerm/ITK,InsightSoftwareConsortium/ITK,richardbeare/ITK,rhgong/itk-with-dom,itkvideo/ITK,richardbeare/ITK,hjmjohnson/ITK,daviddoria/itkHoughTransform,fedral/ITK,blowekamp/ITK,CapeDrew/DCMTK-ITK,paulnovo/ITK,msmolens/ITK,hendradarwin/ITK,LucHermitte/ITK,CapeDrew/DITK,hendradarwin/ITK,blowekamp/ITK,ajjl/ITK,spinicist/ITK,stnava/ITK,fuentesdt/InsightToolkit-dev,PlutoniumHeart/ITK,BRAINSia/ITK,hinerm/ITK,BRAINSia/ITK,spinicist/ITK,BlueBrain/ITK,eile/ITK,paulnovo/ITK,zachary-williamson/ITK,jcfr/ITK,heimdali/ITK,vfonov/ITK,LucHermitte/ITK,fuentesdt/InsightToolkit-dev,thewtex/ITK,blowekamp/ITK,hinerm/ITK,CapeDrew/DCMTK-ITK,wkjeong/ITK,malaterre/ITK,wkjeong/ITK,atsnyder/ITK,BlueBrain/ITK,daviddoria/itkHoughTransform,heimdali/ITK,atsnyder/ITK,ajjl/ITK,blowekamp/ITK,vfonov/ITK,fbudin69500/ITK,cpatrick/ITK-RemoteIO,PlutoniumHeart/ITK,heimdali/ITK,eile/ITK,atsnyder/ITK,blowekamp/ITK,jmerkow/ITK,msmolens/ITK,biotrump/ITK,biotrump/ITK,LucasGandel/ITK,fedral/ITK,cpatrick/ITK-RemoteIO,paulnovo/ITK,BRAINSia/ITK,vfonov/ITK,InsightSoftwareConsortium/ITK,PlutoniumHeart/ITK,PlutoniumHeart/ITK,malaterre/ITK,Kitware/ITK,CapeDrew/DCMTK-ITK,vfonov/ITK,daviddoria/itkHoughTransform,hinerm/ITK,ajjl/ITK,CapeDrew/DCMTK-ITK,Kitware/ITK,LucasGandel/ITK,ajjl/ITK,fedral/ITK,CapeDrew/DITK,fuentesdt/InsightToolkit-dev,eile/ITK,LucHermitte/ITK,vfonov/ITK,LucasGandel/ITK,paulnovo/ITK,rhgong/itk-with-dom,eile/ITK,thewtex/ITK,jcfr/ITK,InsightSoftwareConsortium/ITK,atsnyder/ITK,eile/ITK,rhgong/itk-with-dom,fuentesdt/InsightToolkit-dev,thewtex/ITK,rhgong/itk-with-dom,CapeDrew/DITK,LucHermitte/ITK,jcfr/ITK,spinicist/ITK,spinicist/ITK,jcfr/ITK,thewtex/ITK,CapeDrew/DITK,spinicist/ITK,biotrump/ITK,richardbeare/ITK,malaterre/ITK,zachary-williamson/ITK,GEHC-Surgery/ITK,biotrump/ITK,jmerkow/ITK,hendradarwin/ITK,wkjeong/ITK,ajjl/ITK,paulnovo/ITK,jcfr/ITK,LucasGandel/ITK,jmerkow/ITK,hendradarwin/ITK,Kitware/ITK,daviddoria/itkHoughTransform,InsightSoftwareConsortium/ITK,cpatrick/ITK-RemoteIO,jcfr/ITK,malaterre/ITK,jcfr/ITK,paulnovo/ITK,heimdali/ITK,CapeDrew/DCMTK-ITK,fedral/ITK,atsnyder/ITK,cpatrick/ITK-RemoteIO,fuentesdt/InsightToolkit-dev,msmolens/ITK,vfonov/ITK,itkvideo/ITK,itkvideo/ITK,LucHermitte/ITK,wkjeong/ITK,fuentesdt/InsightToolkit-dev,stnava/ITK,LucHermitte/ITK,rhgong/itk-with-dom,atsnyder/ITK,rhgong/itk-with-dom,fuentesdt/InsightToolkit-dev,wkjeong/ITK,GEHC-Surgery/ITK,itkvideo/ITK,spinicist/ITK,zachary-williamson/ITK,Kitware/ITK,eile/ITK,hendradarwin/ITK,malaterre/ITK,Kitware/ITK,malaterre/ITK,InsightSoftwareConsortium/ITK,BlueBrain/ITK,thewtex/ITK,BRAINSia/ITK,cpatrick/ITK-RemoteIO,biotrump/ITK,jmerkow/ITK,GEHC-Surgery/ITK,atsnyder/ITK,fbudin69500/ITK,CapeDrew/DCMTK-ITK,eile/ITK,zachary-williamson/ITK,BlueBrain/ITK,CapeDrew/DCMTK-ITK,hjmjohnson/ITK,LucHermitte/ITK,CapeDrew/DITK,itkvideo/ITK,fedral/ITK,paulnovo/ITK,GEHC-Surgery/ITK,wkjeong/ITK,CapeDrew/DCMTK-ITK,blowekamp/ITK,daviddoria/itkHoughTransform,daviddoria/itkHoughTransform,BRAINSia/ITK,BRAINSia/ITK,hendradarwin/ITK,spinicist/ITK,malaterre/ITK,jmerkow/ITK,stnava/ITK,hinerm/ITK,daviddoria/itkHoughTransform,jmerkow/ITK,biotrump/ITK,CapeDrew/DITK,heimdali/ITK,CapeDrew/DCMTK-ITK,atsnyder/ITK,LucasGandel/ITK,LucasGandel/ITK,malaterre/ITK,wkjeong/ITK,InsightSoftwareConsortium/ITK,biotrump/ITK,hinerm/ITK,BlueBrain/ITK,atsnyder/ITK,biotrump/ITK,stnava/ITK,CapeDrew/DITK,richardbeare/ITK,BlueBrain/ITK,msmolens/ITK,vfonov/ITK,hendradarwin/ITK,jmerkow/ITK,fbudin69500/ITK,cpatrick/ITK-RemoteIO,BRAINSia/ITK,daviddoria/itkHoughTransform,heimdali/ITK,blowekamp/ITK,malaterre/ITK,fbudin69500/ITK,zachary-williamson/ITK,paulnovo/ITK,ajjl/ITK,daviddoria/itkHoughTransform,itkvideo/ITK,msmolens/ITK,richardbeare/ITK,stnava/ITK,GEHC-Surgery/ITK,GEHC-Surgery/ITK,hjmjohnson/ITK,hjmjohnson/ITK,stnava/ITK,BlueBrain/ITK,PlutoniumHeart/ITK,fedral/ITK,richardbeare/ITK,BlueBrain/ITK,fuentesdt/InsightToolkit-dev,PlutoniumHeart/ITK,PlutoniumHeart/ITK,fedral/ITK,stnava/ITK,jmerkow/ITK,LucasGandel/ITK,hinerm/ITK,richardbeare/ITK,ajjl/ITK,fbudin69500/ITK,blowekamp/ITK,hinerm/ITK,vfonov/ITK,zachary-williamson/ITK,stnava/ITK,hjmjohnson/ITK,fbudin69500/ITK,stnava/ITK,zachary-williamson/ITK,vfonov/ITK,heimdali/ITK,msmolens/ITK,heimdali/ITK