Answer:
In "Preselection", certain object information is displayed even before clicking an object. In this case, the object is highlighted in a specific color. This is not a tooltip, but graphical information. In addition to the color change, you can also specify which elements are to be displayed additionally in this temporary mode by specifying this in the "Preselection" option in Navigator - Display.
For example, you can use the preselection to display the local coordinate system of an element in case of "overrun".
