Results are returned from the operating system, the GENERALSUPPORT library, or KEYEDIO. The results returned by the procedures in GENERALSUPPORT are preceded by an asterisk (*). The results returned by the GENERALSUPPORT procedures will also have a value of 0 (zero) in bits 26:10 of the result. Results from KEYEDIO depend on the type of operation performed, such as OPEN, READ or WRITE. Most of the frequently returned results are returned for each operation. Refer to the descriptions of I/O result enumerated values and open, close, and respond results in the File Attributes Reference Manual.