| WEBVTT | |
| Valid vertical direction settings. | |
| 1 | |
| 00:00:00.000 --> 00:00:01.000 vertical:lr line:0 | |
| Checks left margin | |
| 2 | |
| 00:00:01.000 --> 00:00:02.000 vertical:lr | |
| Checks right margin | |
| 3 | |
| 00:00:02.000 --> 00:00:03.000 | |
| Checks bottom margin | |
| 4 | |
| 00:00:03.000 --> 00:00:04.000 line:0 | |
| Checks top margin |