Moreland, Kenneth wrote: > How portable are these? Do I have to worry about them not existing on, > say, MSVC6 or HP? You'll have to add the "limits" header to the vtkstd and vtksys wrapper header lists (VTK/CMakeLists.txt and VTK/Utilities/kwsys). Other than that I think it might be okay but I have not tried it. -Brad