VTK

Menu: Files->Import->Vtk...

With this option it is possible to read VTK files, with .vtk extension.

This importer/exporter was implemented in past versions as a Tcl plugin, using the VTK Tcl package, now is implemented in the C++ core, and updated to VTK 9.3

The file information is converted into postprocess mesh and results. They are supported unstructured and cartesian meshes.

There is an extra option:
Merge: to add the mesh to the current mesh and results, else current model is erased.