Parent: $root.$constants
| kEFall | All edges floating |
| kEFbottom | Bottom edge floating |
| kEFbottomAndCenterLeftRight | A combination of kEFbottom and kEFcenterLeftRight |
| kEFcenterAll | All edges floating, keeping the control centered in its parent |
| kEFcenterLeftRight | Left and right edges floating,keeping the control centered horizontally in its parent |
| kEFcenterTopBottom | Top and bottom edges floating, keeping the control centered vertically in its parent |
| kEFleftRight | Left and right edges floating |
| kEFleftRightAndCenterTopBottom | A combination of kEFleftRight and kEFcenterTopBottom |
| kEFleftRightBottom | Left,right and bottom edges floating |
| kEFnone | No floating edges |
| kEFposnBottomToolBar | Place field in bottom toolbar position |
| kEFposnClient | Place field in the client position |
| kEFposnFooter | Field is the horizontal footer |
| kEFposnHorzHeader | Field is the horizontal header |
| kEFposnJoinFooter | Field is located where the horizontal footer and vertical header meet |
| kEFposnJoinHeaders | Field is located where the horizontal and vertical headers meet |
| kEFposnLeftToolBar | Place field in left toolbar position |
| kEFposnMainHeader | Field is the main header |
| kEFposnMenuBar | Place field in menu bar position |
| kEFposnRightToolBar | Place field in right toolbar position |
| kEFposnStatusBar | Place field in status bar position |
| kEFposnTopToolBar | Place field in top toolbar position |
| kEFposnVertHeader | Field is the vertical header |
| kEFright | Right edge floating |
| kEFrightAndCenterTopBottom | A combination of kEFright and kEFcenterTopBottom |
| kEFrightBottom | Right and bottom edges floating |
| kEFrightTopBottom | Right,top and bottom edges floating |
| kEFtopBottom | Top and bottom edges floating |
| kEFtopBottomAndCenterLeftRight | A combination of kEFtopBottom and kEFcenterLeftRight |