> 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/understanding-the-structure-tree-pid.md).

# Understanding the Structure Tree (P\&ID)

This chapter describes the use of the Structure Tree with the focus on the P\&ID data. Under [Understanding the Structure Tree (P\&ID/3D)](/plant-tools/plantspecdriven/how-to-use/use-cases/understanding-the-structure-tree-pid3d.md) you will find the remaining information about the use with 3D data.

Remark: The data for the Structure Tree will be loaded on demand. Meaning when you expand a node, the next level(s) will be loaded.

Table of Content:

* [Navigating Structure Tree (P\&ID)](/plant-tools/plantspecdriven/how-to-use/use-cases/understanding-the-structure-tree-pid.md)
* [Filtering by Connection Status (P\&ID)](/plant-tools/plantspecdriven/how-to-use/use-cases/understanding-the-structure-tree-pid/filtering-by-connection-status-pid.md)
* [Filtering by Pipe Spec Status (P\&ID)](/plant-tools/plantspecdriven/how-to-use/use-cases/understanding-the-structure-tree-pid/filtering-by-pipe-spec-status-pid.md)
* [Refresh Tree (P\&ID)](/plant-tools/plantspecdriven/how-to-use/use-cases/understanding-the-structure-tree-pid/refresh-tree-pid.md)
* [Hide/Show Drawing Nodes (P\&ID)](/plant-tools/plantspecdriven/how-to-use/use-cases/understanding-the-structure-tree-pid/hideshow-drawing-nodes-pid.md)
* [Hide/Show Line Segment Nodes (P\&ID)](/plant-tools/plantspecdriven/how-to-use/use-cases/understanding-the-structure-tree-pid/hideshow-line-segment-nodes-pid.md)
* [Hide/Show Hidden Nodes (P\&ID)](/plant-tools/plantspecdriven/how-to-use/use-cases/understanding-the-structure-tree-pid/hideshow-hidden-nodes-pid.md)
* [Open AttributeFlow Task List (P\&ID)](/plant-tools/plantspecdriven/how-to-use/use-cases/understanding-the-structure-tree-pid/open-attributeflow-task-list-pid.md)
* [Open Inconsistency Palette (P\&ID)](/plant-tools/plantspecdriven/how-to-use/use-cases/understanding-the-structure-tree-pid/open-inconsistency-palette-pid.md)
* [Structure Tree Menu (P\&ID)](/plant-tools/plantspecdriven/how-to-use/use-cases/understanding-the-structure-tree-pid/structure-tree-menu-pid.md)