COBOL Manual for TNS/E Programs (H06.08+, J06.03+)

Figure 37 DEFINE Names and COBOL File Names
CLASS Attribute (Required)
The value of the CLASS attribute must be TAPE. The CLASS attribute must be the first attribute in
the ADD DEFINE command, because it determines what other attributes the DEFINE can have and
clears any existing attribute settings, including any that precede it in the ADD DEFINE command.
LABELS Attribute (Required)
The value of the LABELS attribute for a labeled tape file must reflect the type of labels the tape has:
LABELS Attribute ValueLabels
ANSIANSI standard
IBMIBM standard
BYPASSAny other
850 Tape Input and Output