Read Routine Return Codes

 0
Normal completion.
 4
Temporary end of file.
 8
Record requested beyond end of data. The relative record number of the last data record and a pointer to the last data record are returned.
16
Read error. Browse data obtained up to the read error is formatted and displayed with an indication that a read error was encountered.
20
Severe error. (The BRIF service terminates immediately with a return code of 20.)