Click Shaded if the selected items are to have a shadow. The check box is enabled. Connections cannot have a shadow.
Click 3-D effect if the selected items are to be displayed in 3-D style. The check box is enabled. Connections cannot be displayed in a 3-D style.
Click Active if the selected items are to be displayed as inactive. The check box is disabled. Objects are displayed without color and with a gray border, connections are displayed in gray. Graphic objects cannot be displayed as inactive.
You have defined the appearance of model items. To change a setting again, click the relevant option again.