[Paraview] [EXT] Re: Details of XML filter with lists of input arrays

[Utkarsh Ayachit]

> So, after the user chooses some variables, are the chosen variable names in "input_array"?
> Or does "input_array"  contain True or False based on which he chose, in which case where are the corresponding names of the variables?

When user selects variables, he's doing it on the "VolumeArrays"
property. Thus the selection is provided to the VTK filter via calling
the command specified on the "VolumeArrays" property. In the case of
the ExtractCTHParts files, this is done via `AddVolumeArrayName` and
`RemoveVolumeArrayNames` API.