> For the complete documentation index, see [llms.txt](https://help.auxalia.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.auxalia.com/plant-tools/plantspecdriven/how-to-use/configuration/3d-properties/p3d-line-group-class.md).

# P3d Line Group Class

It is recommended to make the property Read-Only, because later deleting the GUID value in the property in 3D will unlink the 3D part from the P\&ID symbol. If you want you can also make the property invisible.

![](https://2994090777-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FZH2AGHzvPfBW7YdaaGc0%2Fuploads%2Fgit-blob-b3897ba8643d0fc80209a5c847982ff36cb0f875%2FPSD-Config-038.png?alt=media)