Built-In Function Definition (BIF Name)
XX must be either UD for User-Defined or OV for Other Vendor
YYYYYYYYYYYYYYY is the name that will describe even to the non-programmer what functions the BIF performs
The program (dll) name must be in the format U_BIFxxx.DLL
xxx is a unique identifier
999 is the unique identifier in the range:
400 to 600 for User-Defined (UD) BIFs.
600 to 999 for Other Vendor (OV) BIFs as per LANSA allocated range.