> 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-equipment-nozzle-classes.md).

# P\&ID Equipment & Nozzle classes

This chapter describes the functions when using the context menu from an Equipment or Nozzle node in a P\&ID drawing.

**Link with 3D Object** allows you to link the P\&ID Equipment or Nozzle to the 3D Equipment or Nozzle. See [Linking Equipment and Nozzles (3D)](/plant-tools/plantspecdriven/how-to-use/use-cases/linking-equipment-and-nozzles-3d/linking-equipment-and-nozzles-3d.md).

**Unlink from 3D Object** allows you to unlink this P\&ID Equipment or Nozzle to the 3D Equipment or Nozzle. See [Unlinking Equipment and Nozzles (3D)](/plant-tools/plantspecdriven/how-to-use/use-cases/linking-equipment-and-nozzles-3d/unlinking-equipment-and-nozzles-3d.md).

**Zoom onto 3D Object** allows you to zoom onto the linked 3D Equipment or Nozzle in the 3D drawing the Equipment or Nozzle was created. See [Identifying Linked Equipment and Nozzles (P\&ID/3D)](/plant-tools/plantspecdriven/how-to-use/use-cases/linking-equipment-and-nozzles-3d/identifying-linked-equipment-and-nozzles-pid3d.md).

**Zoom onto 3D Object in current drawing** also allows you to zoom onto the 3D Equipment or Nozzle, but in the current drawing in case the 3D Equipment or Nozzle are xreffed into the current drawing. This option is available only if the P\&ID object is actually linked to an xreffed object in the current drawing. See [Identifying Linked Equipment and Nozzles (P\&ID/3D)](/plant-tools/plantspecdriven/how-to-use/use-cases/linking-equipment-and-nozzles-3d/identifying-linked-equipment-and-nozzles-pid3d.md).

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