Rollover tooltips are the little windows that pop up when you hover over objects in your AutoCAD LT drawings.
You can use the CUI editor to control which properties appear for which object types (click to see larger):
By default, all objects show the properties in the “General" column – Color, Layer, and Linetype.
When you select an item in the list in the left-hand pane, you see what other properties are available to be displayed in a rollover tooltip. For example, you could choose to show the radius of circles and the area of polylines.
Not all objects are included in this list by default. If you’d like to customize which objects are displayed, click the icon above the list.
That brings up a list of all object types, and you can check the ones whose display you want to change.
Once they show up in the list in the main CUI window, you can choose the rollover properties until you have as many or as few as you want.
And if you want to turn rollover tooltips off entirely, or change their color and font, you can do that in the Options dialog, under the Display tab.