Add a 3D comment to a 3D model

You can use the Add 3D Comment tool to add a 3D comment to a particular part of a 3D model, for example, to provide the coordinate information or the name of the part. A 3D comment contains a text box and a connector line that connects the text box and the part of the 3D model you want to comment on. 

1. On the 3D toolbar (or after right-clicking the 3D model and choosing Tools), select Add 3D Comment. The cursor changes into a Cross automatically.
2. Put the cursor over the desired position you want to comment on and click. Then move the cursor and click again to set the location of the text box.

3. In the pop-up dialog box, enter a comment string, and click OK to complete or click Cancel to discard the comment. 

   In the Default View of the 3D model or with no existing view selected, adding 3D comments creates a new view in the View pane of the Model Tree, with the default name of “3DCommentView[n]”. You can double-click the view name to rename it. The 3D comment will be listed under the created view (as a child of the view), named “3DComment1”, “3DComment2”, and so on. 

   If the 3D comment is added to an existing view, the 3D comment will be listed under that view.

4. The 3D comment will also be listed in the Comments panel in the navigation pane.
5. (Optional) After adding the comment, click on the text box, and a handle (a small red square icon) appears in the upper-left corner of the text box. Click and drag the handle to resize the box. If the text box is not large enough for the text content, the text exceeding the boundaries of the text box will be invisible. 
6. (Optional) To edit a 3D comment, click the icon beside it in the Comments panel and choose Edit.
7. (Optional) To delete or reply to a 3D comment, right-click it in the View pane of the Model Tree (or right-click it in the Comments panel), and choose Delete or Reply.

Notes:

1. Comments added to a 3D model are associated with the corresponding views. The comments associated with a view will be invisible once you switch to another view, but will show again when you switch back to the view. However, if you delete a view, the associated 3D comments will also be removed.
2. You can press the Esc key to exit the 3D Comment mode and return to the last selected navigation mode (such as Rotate) at any time as you add a 3D comment to the 3D model.