In <[email protected]>, on
09/10/2013
   at 01:00 AM, Paul Gilmartin <[email protected]> said:

>But how much IBM software in 1978 actually exploited it? 

Batch or interactive? IBM interactive software exploited lower case
long before the date you asked about.

>TTY 33 ASR

Did the 33 even support lower case? What did you see with, e.g., a
2741?

>Later, using CDC Kronos, 

Display code didn't have lower case. I believe that with NOS and
NOS/BE CDC switched to ASCII, which did have LC.

>and then IBM MVS, I wondered, why couldn't they do likewise: let 
>the output device fold if it chooses to; otherwise let it display 
>mixed case.

Then you were asking for an explanation of something that wasn't true.
All the way back to OS/360, TSO supported mixed case.

Now, if you had asked why IBM didn't impose a corporate standard that
all programs use mixed case in their column headers, that would have
been a reasonable question.


-- 
     Shmuel (Seymour J.) Metz, SysProg and JOAT
     Atid/2        <http://patriot.net/~shmuel>
We don't care. We don't have to care, we're Congress.
(S877: The Shut up and Eat Your spam act of 2003)

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