> 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/3d-drawing-nodes.md).

# 3D Drawing nodes

This chapter describes the functions when using the context menu from a drawing node.

**Open** opens the drawing in read-write mode.

**Open Read-only** opens the drawing in read-only mode. This is typically done by PlantSpecDriven itself, when it needs data from the drawing which cannot be obtained by the P\&ID database.

![](https://2994090777-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FZH2AGHzvPfBW7YdaaGc0%2Fuploads%2Fgit-blob-7e259122596340d2ed748a21797aaff65197bd70%2FUse-Cases-0445.png?alt=media)