| Value | Meaning |
|---|---|
| DWRITE_FLOW_DIRECTION_TOP_TO_BOTTOM0 | <summary> Text lines are placed from top to bottom. </summary> |
| DWRITE_FLOW_DIRECTION_BOTTOM_TO_TOP1 | <summary> Text lines are placed from bottom to top. </summary> |
| DWRITE_FLOW_DIRECTION_LEFT_TO_RIGHT2 | <summary> Text lines are placed from left to right. </summary> |
| DWRITE_FLOW_DIRECTION_RIGHT_TO_LEFT3 | <summary> Text lines are placed from right to left. </summary> |