If an object type is checked, the properties for that object type are displayed in a rollover tooltip when the cursor hovers over an object of the same type. Clear the check mark next to an object type to remove support for that object type from rollover tooltips.
If a property is checked, the property is displayed on a rollover tooltip when the cursor hovers over an object of the selected object type in the drawing window. Clear the check mark next to a property to remove the property for the selected object type.