CYLHD

CYLHD= { ABSOLUTE | RELATIVE }
CYLHD
Defines the way you specify the location of a disk data set in disk functions.
ABSOLUTE
Z Data Tools interprets cylinder-head and track-number values as actual physical addresses.
RELATIVE
Z Data Tools interprets cylinder-head and track-number values as relative to the start of the data set.
Note:
Changing the CYLHD option has no effect for ZDT/Db2, ZDT/IMS, or ZDT/CICS.