Some values for RC are:
01 - No region name specified 02 - Bad line in file 03 - File not found 04 - Error creating file 05 - Error opening file 06 - Error reading file 07 - Error writing to file 08 - TXLOCAL invalid 09 - TXDIR invalid 10 - Region files directory invalid 11 - Messaging support module not found 12 - Utilities module not found 13 - File handling module not found 14 - System files directory invalid 15 - Resource definition file directory invalid 16 - Region directory invalid