[vtkusers] [vtk-developers] Modularization, Context2D and Tcl

David E DeMarle dave.demarle at kitware.com
Thu Mar 29 09:30:29 EDT 2012 

To those who have volunteered to convert the tcl examples this could be useful:

VTK/Utilities/vtkTclTest2Py/vtkTclToPyConvertor.py

David E DeMarle
Kitware, Inc.
R&D Engineer
21 Corporate Drive
Clifton Park, NY 12065-8662
Phone: 518-881-4909



On Thu, Mar 29, 2012 at 8:51 AM, Aashish Chaudhary
<aashish.chaudhary at kitware.com> wrote:
>
>
> On Thu, Mar 29, 2012 at 7:33 AM, Berk Geveci <berk.geveci at kitware.com>
> wrote:
>>
>> I fully agree with Marcus.
>>
>> Given that supporting Tcl going forward is not going to be a big burden, I
>> see no reason to drop it. In my opinion, it is unfair to drop functionality
>> because it requires some minimal effort to carry forward if it is still
>> being used by a part of the community, however small it may be.
>>
>>
>> However, we should transition core documentation (such as the books) as
>> well as tests to use C++ and Python over time. This should be enough to
>> encourage new folks to use Python instead of Tcl.
>
>
> Sounds like a good middle - ground to me.  I am willing to help ( and seems
> like others too ).
>>
>>
>> -berk
>>
>>
>> On Wed, Mar 28, 2012 at 7:00 PM, Marcus D. Hanwell
>> <marcus.hanwell at kitware.com> wrote:
>>>
>>> Hi,
>>>
>>> I didn't intend to start a thread debating the removal of Tcl. My take
>>> on the situation is that there is a fair bit of legacy code out there
>>> using it, including the VTK books and several projects (primarily in
>>> the medical field). In the modularized VTK tree I have the Tcl
>>> wrapping working (mostly at least - more tests need to be brought in),
>>> and wrapping large parts of the API correctly that had thus far not
>>> been brought in properly.
>>>
>>> I think we should mark the Tcl wrapped code as deprecated, 'heirloom'
>>> or whatever the right term is to indicate to our users that we do not
>>> have plans to significantly extend them. At this stage, with the work
>>> already present to support automatically wrapping and the few
>>> problematic modules mapped to similar names, I think we should keep
>>> them available for compilation even if they are superseded by Python
>>> as the default wrapped language.
>>>
>>> I think we should update the next editions of the books to focus
>>> primarily on the C++ API, and Python as the preferred wrapped
>>> language. Having Tcl and Java examples in there would still be
>>> appropriate in my opinion. I don't have any time to do this, but it
>>> seems like there are some people with time and motivation to help with
>>> that. It would be great to hear what the community at large thinks.
>>> Code will probably need to be updated with the correct module names,
>>> we may be able to do a little work there to import the correct new
>>> modules for the old (and this would also likely help in porting Python
>>> code which would have the exact same issue).
>>>
>>> My $0.10 on the issue. I will continue watching the mailing lists with
>>> interest, and of course welcome further input.
>>>
>>> Thanks,
>>>
>>> Marcus
>>>
>>> On Wed, Mar 28, 2012 at 6:08 PM, Wes Turner <wes.turner at kitware.com>
>>> wrote:
>>> > That is not my understanding.
>>> >
>>> > - Wes
>>> >
>>> >
>>> > On Wed, Mar 28, 2012 at 6:07 PM, Darshan Pai <darshanpai at gmail.com>
>>> > wrote:
>>> >>
>>> >> When you say remove TCL, there will still be a switch like USE_TCL ,
>>> >> so
>>> >> that someone who wants to include it in the project can still use it ?
>>> >>
>>> >> Regards
>>> >> Darshan
>>> >>
>>> >>
>>> >> On Wed, Mar 28, 2012 at 5:59 PM, Wes Turner <wes.turner at kitware.com>
>>> >> wrote:
>>> >>>
>>> >>> +1 on seeking input.
>>> >>>
>>> >>> The danger of course, is that people who are merrily using tcl
>>> >>> without
>>> >>> problems may not be subscribed to the mailing lists and we may not
>>> >>> find out
>>> >>> until after we make the change and everything breaks.  Still I think
>>> >>> that is
>>> >>> the correct way to go and the best that we can do.
>>> >>>
>>> >>> - Wes
>>> >>>
>>> >>> On Wed, Mar 28, 2012 at 12:04 PM, Aashish Chaudhary
>>> >>> <aashish.chaudhary at kitware.com> wrote:
>>> >>>>
>>> >>>> In another email to Wes, I suggested the same. I have cc'd vtkuser's
>>> >>>> mailing list as well ( to provide background on the topic, may be
>>> >>>> better to
>>> >>>> start a new thread in the vtkusers mailing list).
>>> >>>>
>>> >>>>
>>> >>>> On Wed, Mar 28, 2012 at 11:55 AM, Bill Lorensen
>>> >>>> <bill.lorensen at gmail.com> wrote:
>>> >>>>>
>>> >>>>> I agree with Will. We should ask the community about the impact of
>>> >>>>> a
>>> >>>>> VTK without tcl.
>>> >>>>>
>>> >>>>> On Wed, Mar 28, 2012 at 8:04 AM, Will Schroeder
>>> >>>>> <will.schroeder at kitware.com> wrote:
>>> >>>>> > This may be a bigger issue than just the ARB, I'm wondering if we
>>> >>>>> > should ask
>>> >>>>> > the question across the broader community, and/or create an
>>> >>>>> > explicit
>>> >>>>> > transition plan.
>>> >>>>> > W
>>> >>>>> >
>>> >>>>> >
>>> >>>>> > On Wed, Mar 28, 2012 at 9:53 AM, Wes Turner
>>> >>>>> > <wes.turner at kitware.com>
>>> >>>>> > wrote:
>>> >>>>> >>
>>> >>>>> >> Changing a few interfaces is manageable.  Removing support for
>>> >>>>> >> the
>>> >>>>> >> entire
>>> >>>>> >> GUI system is much more catastrophic.  If this were a democracy
>>> >>>>> >> I
>>> >>>>> >> would
>>> >>>>> >> stage a filibuster and force a super-majority.  :-)
>>> >>>>> >>
>>> >>>>> >> As it is, I will happily abide by any decision by the ARB, but I
>>> >>>>> >> strongly
>>> >>>>> >> urge that they make an explicit decision and announce it, rather
>>> >>>>> >> than just
>>> >>>>> >> do it by default or allow support to erode away.
>>> >>>>> >>
>>> >>>>> >> - Wes
>>> >>>>> >>
>>> >>>>> >>
>>> >>>>> >> On Wed, Mar 28, 2012 at 7:51 AM, David Cole
>>> >>>>> >> <david.cole at kitware.com>
>>> >>>>> >> wrote:
>>> >>>>> >>>
>>> >>>>> >>> I'm not saying that applications like this shouldn't upgrade.
>>> >>>>> >>> On
>>> >>>>> >>> the
>>> >>>>> >>> contrary, I think they should, and I think they should do it
>>> >>>>> >>> soon,
>>> >>>>> >>> and give
>>> >>>>> >>> us feedback on the new layout of modular VTK, and on the rest
>>> >>>>> >>> of
>>> >>>>> >>> the changes
>>> >>>>> >>> (legacy code removal), ... other changes?
>>> >>>>> >>>
>>> >>>>> >>> I am saying we're making a bunch of changes anyhow, and
>>> >>>>> >>> applications are
>>> >>>>> >>> going to have to make lots of changes to adapt to them
>>> >>>>> >>> anyhow...
>>> >>>>> >>> and because
>>> >>>>> >>> of this, now is the perfect opportunity to make breaking
>>> >>>>> >>> changes,
>>> >>>>> >>> so that
>>> >>>>> >>> apps that need to adapt only need to do it once, and then we
>>> >>>>> >>> position VTK
>>> >>>>> >>> for better things in the future. (Specifically, a C++ namespace
>>> >>>>> >>> and
>>> >>>>> >>> potential for more modern wrapped languages.)
>>> >>>>> >>>
>>> >>>>> >>> Tcl wrapping, even if removed from VTK itself, could be done in
>>> >>>>> >>> a
>>> >>>>> >>> separate project, from the outside, after the fact. That's how
>>> >>>>> >>> ActiViz works
>>> >>>>> >>> for C# wrapping: which is another thing that will have to adapt
>>> >>>>> >>> to
>>> >>>>> >>> this new
>>> >>>>> >>> VTK if it wants to survive. To the best of my knowledge, nobody
>>> >>>>> >>> has
>>> >>>>> >>> spent
>>> >>>>> >>> any effort making sure ActiViz is still going to work
>>> >>>>> >>> flawlessly
>>> >>>>> >>> with the
>>> >>>>> >>> new VTK. That'll be something for somebody's to do list after
>>> >>>>> >>> the
>>> >>>>> >>> dust
>>> >>>>> >>> settles here.
>>> >>>>> >>>
>>> >>>>> >>> This is the one chance we'll have in the next decade to break
>>> >>>>> >>> backwards
>>> >>>>> >>> compatibility: we should take it while we have it.
>>> >>>>> >>>
>>> >>>>> >>>
>>> >>>>> >>> David C.
>>> >>>>> >>>
>>> >>>>> >>>
>>> >>>>> >>> On Mar 28, 2012, at 6:09 AM, Karthik Krishnan
>>> >>>>> >>> <karthik.krishnan at kitware.com> wrote:
>>> >>>>> >>>
>>> >>>>> >>> I agree with Wes. Again, not to be too vocal....
>>> >>>>> >>>
>>> >>>>> >>> I don't vote for  vtk3DWidget being renamed. Despite it being
>>> >>>>> >>> an
>>> >>>>> >>> old
>>> >>>>> >>> generation widgets that we don't recommend folks derive from,
>>> >>>>> >>> but
>>> >>>>> >>> the fact
>>> >>>>> >>> remains that there are a few widgets in VTK that derive from
>>> >>>>> >>> it.
>>> >>>>> >>> There are a
>>> >>>>> >>> lot of widgets in Slicer (<20) and VolView (>10) that derive
>>> >>>>> >>> from
>>> >>>>> >>> it. These
>>> >>>>> >>> are examples from just 2 applications.
>>> >>>>> >>>
>>> >>>>> >>> I don't support Tcl wrapping being dropped. There are still a
>>> >>>>> >>> lot
>>> >>>>> >>> of apps
>>> >>>>> >>> under active development out there relying on VTK being
>>> >>>>> >>> wrappable
>>> >>>>> >>> from Tcl
>>> >>>>> >>> (BioImageSuite, VolView, SCIRun, MIPS to name a few). It hasn't
>>> >>>>> >>> been long
>>> >>>>> >>> since Slicer made the switch either.
>>> >>>>> >>>
>>> >>>>> >>> These are all large applications, with a large user base and
>>> >>>>> >>> important
>>> >>>>> >>> customers of VTK. Don't you think a stand that: "If these
>>> >>>>> >>> applications want
>>> >>>>> >>> to continue using VTK, they shouldn't upgrade" is a bit harsh.
>>> >>>>> >>>
>>> >>>>> >>> thx
>>> >>>>> >>> --
>>> >>>>> >>> karthik
>>> >>>>> >>>
>>> >>>>> >>>
>>> >>>>> >>> On Wed, Mar 28, 2012 at 1:47 AM, David E DeMarle
>>> >>>>> >>> <dave.demarle at kitware.com> wrote:
>>> >>>>> >>>>
>>> >>>>> >>>> And I _will_ add text to the download page to make it clear
>>> >>>>> >>>> what
>>> >>>>> >>>> that
>>> >>>>> >>>> binary is because you are entirely right that it shouldn't be
>>> >>>>> >>>> the
>>> >>>>> >>>> first thing newbies try.
>>> >>>>> >>>>
>>> >>>>> >>>> David E DeMarle
>>> >>>>> >>>> Kitware, Inc.
>>> >>>>> >>>> R&D Engineer
>>> >>>>> >>>> 21 Corporate Drive
>>> >>>>> >>>> Clifton Park, NY 12065-8662
>>> >>>>> >>>> Phone: 518-881-4909
>>> >>>>> >>>>
>>> >>>>> >>>>
>>> >>>>> >>>>
>>> >>>>> >>>> On Tue, Mar 27, 2012 at 4:12 PM, David E DeMarle
>>> >>>>> >>>> <dave.demarle at kitware.com> wrote:
>>> >>>>> >>>> > That is an old school 32bit windows tcl interpreter with the
>>> >>>>> >>>> > tcl
>>> >>>>> >>>> > wrapped vtk libs preloaded. Use it by typing in vtk tcl
>>> >>>>> >>>> > scripts
>>> >>>>> >>>> > there,
>>> >>>>> >>>> > or just pass tcl scripts as filenames to that executable to
>>> >>>>> >>>> > run
>>> >>>>> >>>> > them
>>> >>>>> >>>> > without the shell. (Back when I was a young lad, and when
>>> >>>>> >>>> > Will
>>> >>>>> >>>> > and
>>> >>>>> >>>> > Bill were still old men, that was the _easy_ way to learn
>>> >>>>> >>>> > VTK.
>>> >>>>> >>>> > Ah
>>> >>>>> >>>> > those were the days, even if we did have to walk five miles
>>> >>>>> >>>> > in
>>> >>>>> >>>> > the
>>> >>>>> >>>> > snow to get to grad school.)
>>> >>>>> >>>> >
>>> >>>>> >>>> > My plan for this release is to keep it the same as before. I
>>> >>>>> >>>> > hope to
>>> >>>>> >>>> > find the time to make and post the vtkpython equivalent of
>>> >>>>> >>>> > that
>>> >>>>> >>>> > executable for mac, linux and windows, but I am not going to
>>> >>>>> >>>> > hold up
>>> >>>>> >>>> > the release release for them.
>>> >>>>> >>>> >
>>> >>>>> >>>> > For 6.0 we at least want the python exes, will probably drop
>>> >>>>> >>>> > the
>>> >>>>> >>>> > tcl
>>> >>>>> >>>> > exe, and will try to make a proper SDK so that you don't
>>> >>>>> >>>> > need to
>>> >>>>> >>>> > compile vtk to make c++ apps that use it.
>>> >>>>> >>>> >
>>> >>>>> >>>> > David E DeMarle
>>> >>>>> >>>> > Kitware, Inc.
>>> >>>>> >>>> > R&D Engineer
>>> >>>>> >>>> > 21 Corporate Drive
>>> >>>>> >>>> > Clifton Park, NY 12065-8662
>>> >>>>> >>>> > Phone: 518-881-4909
>>> >>>>> >>>> >
>>> >>>>> >>>> >
>>> >>>>> >>>> >
>>> >>>>> >>>> > On Tue, Mar 27, 2012 at 3:45 PM, David Doria
>>> >>>>> >>>> > <daviddoria at gmail.com>
>>> >>>>> >>>> > wrote:
>>> >>>>> >>>> >> On a related note, every Windows user I have suggested VTK
>>> >>>>> >>>> >> to
>>> >>>>> >>>> >> has
>>> >>>>> >>>> >> gone
>>> >>>>> >>>> >> to this page:
>>> >>>>> >>>> >> http://vtk.org/VTK/resources/software.html#latest2
>>> >>>>> >>>> >>
>>> >>>>> >>>> >> and been extremely confused about what they get with the
>>> >>>>> >>>> >> "Windows
>>> >>>>> >>>> >> (Installer) : vtk-5.8.0-win32-x86.exe". I just downloaded
>>> >>>>> >>>> >> and
>>> >>>>> >>>> >> installed it on a Windows machine, and when I run "VTK"
>>> >>>>> >>>> >> from
>>> >>>>> >>>> >> the
>>> >>>>> >>>> >> start
>>> >>>>> >>>> >> menu (the only thing that appears to be an option), I get a
>>> >>>>> >>>> >> blank
>>> >>>>> >>>> >> terminal window and a blank gray widget with no further
>>> >>>>> >>>> >> instructions/explanation - indeed very confusing!
>>> >>>>> >>>> >>
>>> >>>>> >>>> >> My understanding is that this is some sort of TCL-only
>>> >>>>> >>>> >> binary
>>> >>>>> >>>> >> package?
>>> >>>>> >>>> >> My suggestion would be to remove this from the download
>>> >>>>> >>>> >> page
>>> >>>>> >>>> >> entirely,
>>> >>>>> >>>> >> or at least bury it so it is not the first thing you see
>>> >>>>> >>>> >> and so
>>> >>>>> >>>> >> it
>>> >>>>> >>>> >> doesn't look like what you should download as a new user.
>>> >>>>> >>>> >> It
>>> >>>>> >>>> >> should
>>> >>>>> >>>> >> be
>>> >>>>> >>>> >> immediately clear that VTK is intended to be used as a
>>> >>>>> >>>> >> library,
>>> >>>>> >>>> >> not a
>>> >>>>> >>>> >> standalone application.
>>> >>>>> >>>> >>
>>> >>>>> >>>> >> David
>>> >>>>> >>>> >> _______________________________________________
>>> >>>>> >>>> >> Powered by www.kitware.com
>>> >>>>> >>>> >>
>>> >>>>> >>>> >> Visit other Kitware open-source projects at
>>> >>>>> >>>> >> http://www.kitware.com/opensource/opensource.html
>>> >>>>> >>>> >>
>>> >>>>> >>>> >> Follow this link to subscribe/unsubscribe:
>>> >>>>> >>>> >> http://www.vtk.org/mailman/listinfo/vtk-developers
>>> >>>>> >>>> >>
>>> >>>>> >>>> _______________________________________________
>>> >>>>> >>>> Powered by www.kitware.com
>>> >>>>> >>>>
>>> >>>>> >>>> Visit other Kitware open-source projects at
>>> >>>>> >>>> http://www.kitware.com/opensource/opensource.html
>>> >>>>> >>>>
>>> >>>>> >>>> Follow this link to subscribe/unsubscribe:
>>> >>>>> >>>> http://www.vtk.org/mailman/listinfo/vtk-developers
>>> >>>>> >>>>
>>> >>>>> >>>
>>> >>>>> >>>
>>> >>>>> >>>
>>> >>>>> >>> --
>>> >>>>> >>> --
>>> >>>>> >>> karthik
>>> >>>>> >>>
>>> >>>>> >>>
>>> >>>>> >>> _______________________________________________
>>> >>>>> >>> Powered by www.kitware.com
>>> >>>>> >>>
>>> >>>>> >>> Visit other Kitware open-source projects at
>>> >>>>> >>> http://www.kitware.com/opensource/opensource.html
>>> >>>>> >>>
>>> >>>>> >>> Follow this link to subscribe/unsubscribe:
>>> >>>>> >>> http://www.vtk.org/mailman/listinfo/vtk-developers
>>> >>>>> >>>
>>> >>>>> >>>
>>> >>>>> >>
>>> >>>>> >>
>>> >>>>> >>
>>> >>>>> >> --
>>> >>>>> >> Wesley D. Turner, Ph.D.
>>> >>>>> >> Kitware, Inc.
>>> >>>>> >> Technical Leader
>>> >>>>> >> 28 Corporate Drive
>>> >>>>> >> Clifton Park, NY 12065-8662
>>> >>>>> >> Phone: 518-881-4920
>>> >>>>> >>
>>> >>>>> >> _______________________________________________
>>> >>>>> >> Powered by www.kitware.com
>>> >>>>> >>
>>> >>>>> >> Visit other Kitware open-source projects at
>>> >>>>> >> http://www.kitware.com/opensource/opensource.html
>>> >>>>> >>
>>> >>>>> >> Follow this link to subscribe/unsubscribe:
>>> >>>>> >> http://www.vtk.org/mailman/listinfo/vtk-developers
>>> >>>>> >>
>>> >>>>> >>
>>> >>>>> >
>>> >>>>> >
>>> >>>>> >
>>> >>>>> > --
>>> >>>>> > William J. Schroeder, PhD
>>> >>>>> > Kitware, Inc.
>>> >>>>> > 28 Corporate Drive
>>> >>>>> >
>>> >>>>> > Clifton Park, NY 12065
>>> >>>>> > will.schroeder at kitware.com
>>> >>>>> > http://www.kitware.com
>>> >>>>> > (518) 881-4902
>>> >>>>> >
>>> >>>>> > _______________________________________________
>>> >>>>> > Powered by www.kitware.com
>>> >>>>> >
>>> >>>>> > Visit other Kitware open-source projects at
>>> >>>>> > http://www.kitware.com/opensource/opensource.html
>>> >>>>> >
>>> >>>>> > Follow this link to subscribe/unsubscribe:
>>> >>>>> > http://www.vtk.org/mailman/listinfo/vtk-developers
>>> >>>>> >
>>> >>>>> >
>>> >>>>>
>>> >>>>>
>>> >>>>>
>>> >>>>> --
>>> >>>>> Unpaid intern in BillsBasement at noware dot com
>>> >>>>> _______________________________________________
>>> >>>>> Powered by www.kitware.com
>>> >>>>>
>>> >>>>> Visit other Kitware open-source projects at
>>> >>>>> http://www.kitware.com/opensource/opensource.html
>>> >>>>>
>>> >>>>> Follow this link to subscribe/unsubscribe:
>>> >>>>> http://www.vtk.org/mailman/listinfo/vtk-developers
>>> >>>>>
>>> >>>>
>>> >>>>
>>> >>>>
>>> >>>> --
>>> >>>> | Aashish Chaudhary
>>> >>>> | R&D Engineer
>>> >>>> | Kitware Inc.
>>> >>>> | www.kitware.com
>>> >>>>
>>> >>>> _______________________________________________
>>> >>>> Powered by www.kitware.com
>>> >>>>
>>> >>>> Visit other Kitware open-source projects at
>>> >>>> http://www.kitware.com/opensource/opensource.html
>>> >>>>
>>> >>>> Please keep messages on-topic and check the VTK FAQ at:
>>> >>>> http://www.vtk.org/Wiki/VTK_FAQ
>>> >>>>
>>> >>>>
>>> >>>> Follow this link to subscribe/unsubscribe:
>>> >>>> http://www.vtk.org/mailman/listinfo/vtkusers
>>> >>>>
>>> >>>
>>> >>>
>>> >>>
>>> >>> --
>>> >>> Wesley D. Turner, Ph.D.
>>> >>> Kitware, Inc.
>>> >>> Technical Leader
>>> >>> 28 Corporate Drive
>>> >>> Clifton Park, NY 12065-8662
>>> >>> Phone: 518-881-4920
>>> >>>
>>> >>> _______________________________________________
>>> >>> Powered by www.kitware.com
>>> >>>
>>> >>> Visit other Kitware open-source projects at
>>> >>> http://www.kitware.com/opensource/opensource.html
>>> >>>
>>> >>> Please keep messages on-topic and check the VTK FAQ at:
>>> >>> http://www.vtk.org/Wiki/VTK_FAQ
>>> >>>
>>> >>> Follow this link to subscribe/unsubscribe:
>>> >>> http://www.vtk.org/mailman/listinfo/vtkusers
>>> >>>
>>> >>
>>> >
>>> >
>>> >
>>> > --
>>> > Wesley D. Turner, Ph.D.
>>> > Kitware, Inc.
>>> > Technical Leader
>>> > 28 Corporate Drive
>>> > Clifton Park, NY 12065-8662
>>> > Phone: 518-881-4920
>>> >
>>> > _______________________________________________
>>> > Powered by www.kitware.com
>>> >
>>> > Visit other Kitware open-source projects at
>>> > http://www.kitware.com/opensource/opensource.html
>>> >
>>> > Please keep messages on-topic and check the VTK FAQ at:
>>> > http://www.vtk.org/Wiki/VTK_FAQ
>>> >
>>> > Follow this link to subscribe/unsubscribe:
>>> > http://www.vtk.org/mailman/listinfo/vtkusers
>>> >
>>> _______________________________________________
>>> Powered by www.kitware.com
>>>
>>> Visit other Kitware open-source projects at
>>> http://www.kitware.com/opensource/opensource.html
>>>
>>> Follow this link to subscribe/unsubscribe:
>>> http://www.vtk.org/mailman/listinfo/vtk-developers
>>>
>>
>>
>> _______________________________________________
>> Powered by www.kitware.com
>>
>> Visit other Kitware open-source projects at
>> http://www.kitware.com/opensource/opensource.html
>>
>> Please keep messages on-topic and check the VTK FAQ at:
>> http://www.vtk.org/Wiki/VTK_FAQ
>>
>> Follow this link to subscribe/unsubscribe:
>> http://www.vtk.org/mailman/listinfo/vtkusers
>>
>
>
>
> --
> | Aashish Chaudhary
> | R&D Engineer
> | Kitware Inc.
> | www.kitware.com
>
> _______________________________________________
> Powered by www.kitware.com
>
> Visit other Kitware open-source projects at
> http://www.kitware.com/opensource/opensource.html
>
> Please keep messages on-topic and check the VTK FAQ at:
> http://www.vtk.org/Wiki/VTK_FAQ
>
> Follow this link to subscribe/unsubscribe:
> http://www.vtk.org/mailman/listinfo/vtkusers
>

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