This page exists within the Old ArtZone Wiki section of this site. Read the information presented on the linked page to better understand the significance of this fact.
To see keyframes, you actually need to use the aniMate. To do this, go to VIEW –> Tabs –> aniMate Lite.
In the aniMate Lite plugin, right-click (or command-click) in a blank area to get a context menu. Then left-click on 'Studio Keys.'
Now you will see a new line with marks for keyframes.