| Item | Description |
| Break() | Exits from a BEGIN SEQUENCE block. |
| DosError() | Sets or retrieves the last DOS error code. |
| ErrorBlock() | Sets or retrieves the error handling code block. |
| ErrorLevel() | Sets the exit code of the xHarbour application. |
| ErrorNew() | Creates a new Error object and optionally fills it with data. |
| ErrorSys() | Installs the default error code block. |
| HB_LangErrMsg() | Returns language specific error messages. |
| HB_OsError() | Returns the operating specific error code of the last low-level file operation. |
| SetErrorMode() | Queries or changes the behavior with operating system errors. |
| Throw() | Throws an exception. |
