Problem
This article explains how to control an objects visibility using hover. The object will remain invisible until the mouse hovers over it at which point the object will become visible.
Solution
Start by creating an object on a mimic. In this example, I have created an eliipse.Go into the properties of the ellipse and select the 'Animations' button. Set the 'Visibility' field to '1' and check the 'Hover' box.
Click 'Ok' and then 'Close'. At the Properties dialog uncheck the 'Visible' checkbox.
Close the 'Properties" dialog and put the mimic into run mode.
If the cursor is away from the ellipse it will remain invisible on the screen.
As soon as the cursor hovers on top of the ellipse, it becomes visible.