Select one or more objects.
See "To Select Control Objects in the Interface or the Browser" for instructions. Select one object to center it between the edges of its parent.
Choose Distribute from the Layout menu of the primary window or the interface pop-up menu (displayed by pressing mouse button 3) and select one of the distribute icons from the submenu.
The selected objects will be distributed or centered according to your choice.
Objects will be spaced 10 pixels apart horizontally or vertically if you choose one of the distribute choices. If you choose one of the centering choices, the object or objects will be centered within the boundaries of the parent control pane.
Horizontal-space: Distributes selected objects horizontally 10 pixels apart. The left-most object is the anchored object, which does not move.
Vertical-space: Distributes selected objects vertically 10 pixels apart. The top-most object is the anchored object, which does not move.
Horizontal-center: Centers selected objects horizontally between the left and right edges of the parent object, maintaining the distance between selected objects.
Vertical-center: Centers selected objects vertically between the top and bottom edges of the parent object, maintaining the distance between selected objects.