# Add comments to a 3D model

You can add comments to a 3D model only if the PDF creator enables the functionality for Reader users.

1. Select a tool from the Comment & Markup toolbar.
2. Click in the 3D model to add a comment and create a new view in the Model Tree.

You can add comments to an existing comment view by selecting that view in the Model Tree before you click in the model.

Related Information

- View movies, sounds, and 3D models