Comments added to a 3D object are associated with specific views that are defined when the comments are added. If the view is changed—for example, if the 3D object is rotated or moved—the comments are no longer visible.
You have three ways to add comments to a 3D object:
Using the 3D Comment Tool on the 3D toolbar to add comments to specific parts of a 3D model.
Using the Annotations panel in the Comment pane to add a variety of comment types to a 3D view.
Converting a 3D measurement into a comment.
Adding comments to 3D model views requires version 7.0.7 or later of Acrobat or Reader.
If you don’t want a comment to be associated with a 3D view, add the comment outside the 3D object area.
Comments created by using the 3D Comment Tool are like measurements in that they are associated with a specific part of the 3D geometry. When you add 3D comments to the default view of a model, a new view, called 3DCommentView is created. 3D comments added to other views are listed as components of that view in the Model Tree. You can edit and remove 3D comments the same way to edit and remove measurements.
When you add comments by using the tools on the Comment task pane, a new view is created in the Model Tree called CommentView.
Adobe Reader users can add comments to a PDF if the document author enables commenting for that PDF.
To create an additional comment in a view, make sure that the commenting view you want is selected in the Model Tree. Then click inside the 3D object area.
To create an additional comment in a new commenting view, make sure that no commenting view is selected in the Model Tree,. Then click inside the 3D object area.
If you delete one of these automatically generated commenting views, the associated comments are still available. You can view and select them in the Comments panel or in the Model Tree, where they are listed under the views. Selecting a comment switches the 3D model to the same viewing configuration it had when the comment was added.
Individual measurements can be converted to comments, so that they can be reviewed and annotated like other types of comments.