| Member | Description |
|---|---|
| BOTTOM_TO_TOP_LEFT_TO_RIGHT | Inline progression from bottom to top; block progression from left to right. This is the typical writing mode for the Batak writing system. |
| BOTTOM_TO_TOP_RIGHT_TO_LEFT | Inline progression from bottom to top; block progression from right to left. This is the typical writing mode for the Ancient Berber writing system. |
| LEFT_TO_RIGHT_BOTTOM_TO_TOP | Inline progression from left to right; block progression from bottom to top. There is currently no known writing system to which this writing mode applies. |
| LEFT_TO_RIGHT_TOP_TO_BOTTOM | Inline progression from left to right; block progression from top to bottom. This is the typical writing mode for Western writing systems. |
| RIGHT_TO_LEFT_BOTTOM_TO_TOP | Inline progression from right to left; block progression from bottom to top. There is currently no known writing system to which this writing mode applies. |
| RIGHT_TO_LEFT_TOP_TO_BOTTOM | Inline progression from right to left; block progression from top to bottom. This is the typical writing mode for Arabic and Hebrew writing systems. |
| TOP_TO_BOTTOM_LEFT_TO_RIGHT | Inline progression from top to bottom; block progression from right to left. This is the typical writing mode for Chinese and Japanese writing systems. |
| TOP_TO_BOTTOM_RIGHT_TO_LEFT | Inline progression from top to bottom; block progression from left to right. This is the typical writing mode for writing systems like classical Mongolian. |