- DDNAME
- This represents a file which was open during the observation
session. If the same DDNAME is open (and closed) multiple times during
the session, it is suffixed with an instance number to indicate this.
- Cylinder Address
- These lines appear when the "+" line command is used
to expand a DDNAME line. Each line shows a particular DASD cylinder
and further breaks down the measurement by file into quantification
by specific cylinders.
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