@CONNECT Parameters

REC=: Connects the current occurrence of the named record to the current occurrence of the specified set.
record-name: Must be a record included in the subschema and must be defined as an optional automatic, optional manual, or mandatory manual member of the set to which it is being connected. Record-name may be specified as a register, a user-defined variable data field, or a user-supplied value in quotation marks.
SET=: Specifies the set to which the member record is to be connected.
set-name: Must specify a set included in the subschema. The record is connected to the set in accordance with the ordering rules defined for that set in the schema. Set-name may be specified as a register, a user-defined variable data field, or a user-supplied value in quotation marks.