> 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/use-cases/explaining-context-menus-pid3d/structure-tree/pid-line-group-classes.md).

# P\&ID Line Group classes

This chapter describes the functions when using the context menu from a Pipe Line Group node in a P\&ID drawing.

**Unlink from 3D Object** removes the link from the 3D Pipe Line Group so the node appears unlinked again. See [Unlinking P\&ID Line Group (3D)](/plant-tools/plantspecdriven/how-to-use/use-cases/linking-pid-symbols-3d-object-pid3d/unlinking-pid-line-group-3d.md).

**Run AutoPipe for PipeLineGroup** updates missing flanges and fasteners on this specific Pipe Line Groups and in extension all Pipe Line Segments of the Pipe Line Group.

![](https://2994090777-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FZH2AGHzvPfBW7YdaaGc0%2Fuploads%2Fgit-blob-4b9e9ef5b5f257e29c5dc79ea9ae4ecc5f16d80c%2FUse-Cases-0440.png?alt=media)