Every visible anatomical structure on the 3D model can be highlighted. By highlighting a structure you will also display the label (title) of that structure. 

Simply use the mouse pointer to click on the structure of interest and the selected structure will be highlighted.  

To cancel the highlighting, click on the structure again, on another structure, or on any part of the image's background.

The colour of the highlighter can be changed by clicking on the Preferences icon.