# How do I mark the cells with a line with width on the surface of the model
**URL:** https://discourse.paraview.org/t/how-do-i-mark-the-cells-with-a-line-with-width-on-the-surface-of-the-model/14269
**Category:** ParaView Support
**Created:** [March 26, 2024, 3:28pm UTC](https://discourse.paraview.org/t/how-do-i-mark-the-cells-with-a-line-with-width-on-the-surface-of-the-model/14269 "2024-03-26T15:28:40Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@ztom](https://discourse.paraview.org/u/ztom)
#### Post date: [March 26, 2024, 3:28pm UTC](https://discourse.paraview.org/t/how-do-i-mark-the-cells-with-a-line-with-width-on-the-surface-of-the-model/14269/1 "2024-03-26T15:28:40Z")
Hello everyone, I would like to ask you how to draw ablation lines with a diameter of 2 mm on the surface of the atrial model as shown in this picture. How is this done in paraview?
I wonder if there is a tool like a brush or a circle that can set the diameter to 2 mm and select continuous cells on the surface of the atrium. Or there’s some other way.
Thank you all!
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### Author:  [@ztom](https://discourse.paraview.org/u/ztom)
#### Post date: [March 26, 2024, 3:29pm UTC](https://discourse.paraview.org/t/how-do-i-mark-the-cells-with-a-line-with-width-on-the-surface-of-the-model/14269/2 "2024-03-26T15:29:47Z")
the ablaion line is the black line in the picture