How do I make a comment on the model or part?

Provided in Acrobat Reader and Professional is an Adobe 3D toolbar. This toolbar gives access for users to easily collaborate with other users with the 3D comment and measurement tools. When a 3D comment is created it is automatically stored as a 3D view.

In addition, users can also change formatting options such as lighting, background color, manage views, cross section, render modes, and more. To access this toolbar, right click anywhere in the 3D scene and select “Tools>Show Toolbar.” If you do not see all the tools mentioned in this thread, select “Expand 3D Tools”