A subvalue mark is the specific metacharacter used within D3 items to indicate the end of a subvalue, and the beginning of another.
The subvalue mark is a reserved character, meaning that it cannot be used for any other purpose.
The following table shows the different representations for the subvalue mark:
| ASCII value | \ |
| Hexadecimal value | fc |
| Decimal value | 252 |
A subvalue mark can be entered in the Update processor by pressing CTRL+SHIFT\ (backward slash).