| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta charset=utf-8> | |
| <title><sub></title> | |
| </head> | |
| <body> | |
| <!-- not a block --> | |
| <sub>text</sub> | |
| <!-- cannot contain structured inline --> | |
| <p><sub><ul><li>text</li></ul></sub></p> | |
| <!-- cannot contain interactive if parent forbids interactive --> | |
| <p><a><sub><a>text</a></sub></a></p> | |
| <p><a><dfn><sub><a>text</a></sub></dfn></a></p> | |
| </body> | |
| </html> |