Parameters

DATA=: Specifies the address of the qualified data that the macro will insert into the address specified by the WORK= parameter.
WORK=: Specifies the work area where the specified qualifier data (DATA=) is to be placed. Use the WORK=addr form of this parameter only for the first issuance of this macro for the specific qualified name.
When WORK=addr is specified for the first qualifier, JES3 puts this value from the first invocation into register 1. Then for all of the following issuances, use WORK=(R1). Do not change the value of register 1 between invocations of IATXBQN.
LAST=: Specifies whether this is the last qualifier of the qualified data set name. JES3 will not insert a period after the last qualifier. This parameter is required for the last macro invocation for the specific qualified name.
COMPRESS=: Specifies whether JES3 should compress trailing blanks or trailing zeros before inserting the period between qualifiers. JES3 expects the qualifiers to have a maximum of eight characters.