First value for low surrogate values.
Source position: unicodedata.pas line 137
| const LOW_SURROGATE_BEGIN = Word($DC00); | 
| 
 | Last value for low surrogate values. | |
| 
 | Last value for high surrogate values. | |
| 
 | First value for high surrogate values. | |
| 
 | Number of high surrogate values. |