A sidelite is a glass panel set on one or both sides of a door (usually an entry door). A highlite is a glass panel above a door. You can choose which lites which you want to display.
To display lites on a door:
Select the door.
Right-click and select Properties, or select Edit > Modify Elements > Properties.
In the Doors dialog, select the Basic tab.
To display a highlite over the door, enable the Display Highlite check box.
To display a sidelite on the left side of the door, enable the Display Left Sidelite check box.
To display a sidelite on the right side of the door, enable the Display Right Sidelite check box.
Click OK.