| /// This encoding matches GB18030-2005 except the two-byte sequence 0xA3 0xA0 |
| /// maps to U+3000 for compatibility with existing Web content. As a result, |
| /// this encoding can represent all of Unicode except for the private-use |
| /// character U+E5E5. |
| /// |
| /// [Index visualization for the two-byte sequences](https://encoding.spec.whatwg.org/gb18030.html), |
| /// [Visualization of BMP coverage of the two-byte index](https://encoding.spec.whatwg.org/gb18030-bmp.html) |
| /// |
| /// This encoding matches the Windows code page 54936. |