# CPlane

## <img src="/files/mJ9cHirUjxzvejWkuLt6" alt="" data-size="line"> CPlane

The **CPlane** command in Rhino sets the construction plane (CPlane) origin and orientation in the active viewport, providing a "tabletop" for drawing. Users can adjust the CPlane's position and rotation using several options such as aligning it with curves, surfaces, objects, and views. Key options include **Curve**, **Object**, **Surface**, **Elevation**, **Rotate**, and **3Point**. For jewelry design, this tool is helpful for setting precise working planes on curves or surfaces for modeling and engraving.


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.rhinoartisan.com/commands/curve/cplane.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.