| Operation Type | Value | Description |
| ReverseOpBits | 0 | Reverse bits in a selection |
| ReverseOpBytes | 1 | Reverse bytes in a selection |
| Operand Size | Value | Description |
| OperandSizeByte | 0 | 8-bit integer (BYTE). Cannot be used with ReverseOpBytes operation. |
| OperandSizeWord | 1 | 16-bit integer (WORD). |
| OperandSizeDword | 2 | 32-bit integer (DWORD). |
| OperandSizeQword | 3 | 64-bit integer (QWORD). |