| Member | Description |
|---|---|
| BEFORE | Placed so that the before edge of the element's allocation rectangle coincides with that of the nearest enclosing reference area. |
| BLOCK | Stacked in the block-progression direction within an enclosing reference area or parent. |
| END | Placed so that the end edge of the element's allocation rectangle coincides with that of the nearest enclosing reference area. |
| INLINE | Packed in the inline-progression direction. |
| START | Placed so that the start edge of the element's allocation rectangle coincides with that of the nearest enclosing reference area. |