When you create a consecutive data set you must specify:
The name of data set to be associated with your PL/I file.
A data set with consecutive organization can exist on any type of
device.
The record length. You can specify the record length using the
RECSIZE option of the ENVIRONMENT attribute, of the DD_DDNAME
environment variable, or of the TITLE option of the OPEN statement.
For files associated with the terminal device (stdout: or
stderr:), PL/I uses a default record length of 120 when
the RECSIZE option is not specified.