External Sets for Export Tasks
When used for an export task, the elements of an external set correspond to the fields in the external file into which the data is to be exported. For each field, you need to define the output data type. When you are using the FIXED or FIXEDVLE format, you also have to specify either the length or the (IO) format (except for the last field when using FIXEDVLE). The SQL statement determines which data is to be exported.
You can have USoft Batch compute the set elements for you (on the basis of the SQL statement), and then change them, if required.