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### Viewport layers

Viewport layers render two-dimensional text and graphics on top of the three-dimensional scene. They allow you to include additional information in output pictures and animations. OVITO provides several layer types (see table below), which you can add to a viewport. Go to the Viewport layers tab of OVITO's command panel (screenshot on the right) to manage the layers of the active viewport.

Note that viewport layers are only visible in the interactive viewport windows while render preview mode is turned on for a viewport. OVITO activates the render preview mode automatically for the active viewport whenever you add a new layer.

Available viewport layer types:

Layer type | Description
--- | ---
Color legend | Paints the color map legend for a Color coding modifier
Coordinate tripod | Renders an axes tripod to indicate the view orientation
Python script pro | Calls your own Python script function to draw arbitrary graphics on top of the rendered image
Text label | Renders a user-defined text string, which can contain dynamically computed variables

#### See also

`ViewportOverlay` (Python API) pro
`Viewport.overlays` (Python API) pro
`Viewport.underlays` (Python API) pro

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