| Member | Description |
|---|---|
| Busy | X-clock busy. |
| InvalidChar | Minus symbol. |
| InvalidFunc | Minus function. |
| InvalidNumber | Wrong number. |
| NoStatus | No x-clock present. |
| NumericOnly | Numeric input only. |
| PastEof | Too much entered. |
| ProtectedField | Protected field, input inhibited. |
| System | System wait. |