https://www.ibm.com/support/knowledgecenter/en/SSLTBW_2.3.0/com.ibm.zos.v2r3.f54em00/nulls.htm
ISPF edit option NULLS.  Choose your poison as needed.
NULLS OFF - end of field filled with blanks.
NULLS ALL - end of field filled with nulls.
NULLS STD - end of field gets 1 blank and the rest nulls.

On Wed, Aug 14, 2019 at 10:04 AM Seymour J Metz <[email protected]> wrote:
>
> > No, I asked about adding a blank at the end of a line
>
> If you type a blank at the end of a line filled with nulls then on a 3270 or 
> compliant 3270 simulator the nulls will not be read and ISPF will not be able 
> to determine that the blank was at the end of the line.
>
> > No, if I do that now, Read Modified returns that blank to the host.
>
> On a 3270 it does not return the nulls preceding the blank.
>
>
> --
> Shmuel (Seymour J.) Metz
> http://mason.gmu.edu/~smetz3
>
> ________________________________________
> From: IBM Mainframe Discussion List <[email protected]> on behalf of 
> Paul Gilmartin <[email protected]>
> Sent: Tuesday, August 13, 2019 4:44 PM
> To: [email protected]
> Subject: Re: ISPF Question - browsing variable length records
>
> On Tue, 13 Aug 2019 19:55:19 +0000, Seymour J Metz wrote:
>
> >> When I care, I set NULLS OFF, or use the spacebar.
> >
> >That's the right answer to the wrong question. You were asking about the 
> >ability to insert a blank in the middle of a string of nulls.
> >
> No, I asked about adding a blank at the end of a line.
>
> >> Which is why I didn't suggest IBM change it, nor change the 3270 
> >> specification.
> >
> >You wrote "It should be intuitive: add blanks by positioning the cursor at 
> >the end of the line and pressing the spacebar." That would require a change 
> >in the 3270 specifications.
> >
> No, if I do that now, Read Modified returns that blank to the host.  ISPF
> Edit discards it.
>
> -- gil
>
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-- 
Mike A Schwab, Springfield IL USA
Where do Forest Rangers go to get away from it all?

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