Selected-state emphasis
During a session with the interface builder, clicking on a component of the desktop with the mouse button will cause this component to be displayed with selected-state emphasis. This panel lets you choose how you want the component to be emphasized, according to your preferences. You may want it bordered or marked, or both.
The following parameters may be changed, at your convenience.
Tracking
Marker
If you choose this option, the component will be materialized with small squares to all points of the compass.
Size
This parameter indicates the thickness of the markers.
Color
Wheel
The color wheel lets you determine the color you want to be applied to markers. The black lines in the wheel cross at your preselected color, acting like a pointer. Drag this pointer with the mouse and position it exactly where needed.The brightness slider at the right of the wheel displays a selection of values, from light to dark, for the selected color in the color wheel. Drag the slider up or down to adjust the brightness.
For further information about the Color Wheel, see the "Color Wheel" chapter.