Use Comments, Markups, and Tags
You can add comments to viewpoints, viewpoint animations, selection and search sets, clash results, and TimeLiner tasks. When you add a markup, a viewpoint is automatically attached to it.
Review tools (markups and tags) enable you to add annotations to viewpoints, and clash detection results.
Note: The Clash Detective feature is available for Autodesk Navisworks Manage users only.
Using review tools is mutually exclusive to using navigation tools (see Product-Specific Navigation Tools), so that when you add markups or tags you cannot navigate and vice versa.