# Structured vtk file with labels (strings) for identifying boundaries

**URL:** https://discourse.paraview.org/t/structured-vtk-file-with-labels-strings-for-identifying-boundaries/13220
**Category:** ParaView Support
**Created:** [November 9, 2023, 12:48pm UTC](https://discourse.paraview.org/t/structured-vtk-file-with-labels-strings-for-identifying-boundaries/13220 "2023-11-09T12:48:32Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![Rob777](https://discourse.paraview.org/user_avatar/discourse.paraview.org/rob777/32/3776_2.png) [@Rob777](https://discourse.paraview.org/u/Rob777)
#### Post date: [November 9, 2023, 12:48pm UTC](https://discourse.paraview.org/t/structured-vtk-file-with-labels-strings-for-identifying-boundaries/13220/1 "2023-11-09T12:48:32Z")

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Dear All,

I wonder if there’s a VTK file format which allow to write a structured/curvilinear mesh mesh with the addition of labels for the cell faces boundaries, so that one can successively extract the boundaries by just selecting them…  
I know there is “extract subset” but having the boundary names is crucial…

Thank you