>> the command line that eventually leads to another FTOPEN. This is like 
>> saying that "why are you making left turns? You can just make a bunch of 
>> right turns instead". The capability exists, it should work.

Michael,

In your case since you are EDITING the supec generated JCL in batch, it is 
opened in EXCLUSIVE mode and unless you close it, no one else can access it.  
That behavior is same across any operating system.  The FTOPEN error is the 
result of Enqueue failure.

>>(they don't know how to name their screens).

SCRNAME has existed for a long time.  With ZSTART parm, you can stack the 
commands to having multiple screens along with their names.   And if someone 
forgot as to how many screens they have ,then they can use SWAPBAR ON and it 
shows ALL of the screens with their names and you can point to the screen of 
your choice using the mouse and click on it to get to the desired screen.

https://www.ibm.com/docs/en/zos/2.5.0?topic=commands-scrname

https://www.ibm.com/docs/en/zos/2.5.0?topic=commands-swapbar

>> FWIW, I almost never create more than two ISPF screens. I do my work by 
>> stacking commands on top of each other.

I know it is a personal preference but, aren't you limiting yourself when you 
need more than 2 screens ?  For example Viewing a DUMP in 1 screen and the 
LISTING in 1 screen and Input/output files in another screen ?  Also, just 
curious as to how you are keeping track of your stacked sessions?  Let's  say 
you stacked 8 layers and then when you need to get out of each session, how do 
you ensure that you accidentally don't close a session that you need to save?

Thanks,
Kolusu


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