From the user perspective they don't make any difference. From the designer perspective they arrange the children objects automatically. I prefer more exact control so I didn't use them in my persona window stats tab.
From the UIBuilder doc:
Composite
Parent : Page
Page that automatically spaces visible widgets
Orientation
Horizontal/Vertical
Spacing - gap size
integer
SpacingType
Fill - make the widgets take up all the space
Spread - spread the widgets equally
Constant - fixed spacing
Alignment
Front - left/top
Center - center
Back - right/bottom
Padding -
Internal - spacing between items
External - spacing on the outside
Both - spacing both between and on the outside
|