-On PC: if the LMB could be used to orbit, the MMB to pan; the RMB could be kept to open&close the definition (or for options)
These are the same shortcuts used for both Digital anatomy and Visible Body.
-Most definitions are quite long, so that a full switch to the definition would be convenient on mobile, and maybe a side panel for PC.
-Scrolling in the definition would be more intuitive with MMB on PC.
-Since the layers are easily accessed, it may make sense to isolate the selected objects in relation to their layers. In this way, bringing another collection after isolating things would still change something.
