ISPFPACK

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             .-YES-.   
>>-ISPFPACK=-+-NO--+-------------------------------------------><

ISPFPACK
Specifies whether Z Data Tools is to check the data set or member to determine if it has been written with the ISPF PACK option.
YES
Z Data Tools is to check the data set or member to determine if it has been written with the ISPF PACK option. If so, Z Data Tools then unpacks the data to allow it to be edited or viewed in the normal fashion. If the data set is too large to be contained in memory, Z Data Tools is not able to edit or view the data set in unpacked form, but instead provides the data set in its packed form.
NO
Z Data Tools does not check the data and the editor operates on the record data regardless of the data being in ISPF pack form or not.