John

> Of course, I'm "ass.u.ming" you follow the SBAs immediately with SF[E] 
orders....

In which case, it's the attribute one would have to worry about! 

Chris Mason

On Tue, 28 Jul 2009 08:00:33 -0500, Chase, John <[email protected]> 
wrote:

>> -----Original Message-----
>> From: IBM Mainframe Discussion List On Behalf Of Martin Kline
>>
>> My test showed system symbols were replaced by removing or adding
>> characters as necessary. (Because I can't remember exactly how to get
>> ampersands to diplay correctly on the list server and I'm too lazy to
>look it up,
>> my examples will use pound signs, '#', instead).
>>
>> For example '---#SYSNAME---' is displayed as '---SYS1---'. At least on
>the
>> 1.9 release I have installed. This does NOT display as '---SYS1
>---'.
>>
>> My advice is if you depend on exact positioning for the other
>characters on
>> the screen such as drawing a box around your data, or drawing a pic of
>a
>> dinosaur (like I do), then use SBA orders to position the trailing
>data correctly.
>>
>> As Chris indicated, the other non-system symbols that can be replaced
>do
>> specify what happens with alignment, spaces, numerics, etc. The issue
>is with
>> the system symbols, because the names of the variables may be either
>longer
>> or shorter than the values that get substituted.
>>
>> Bonus question:
>>
>> If your USS message contains SBA orders, and the address happens to
>end in
>> X'7C', such as such as X'11C17C' for row 2 column 45 on an
>80-character wide
>> screen, and the following characters happen to match one of the
>allowed
>> keywords, what happens? Likewise, what happens when the SBA happens 
to
>> end in X'50'?
>
>From the context in which you ask, I'd guess something "strange and
>wonderful" occurs; but I've been too long away from "serious" 3270
>datastream coding to remember anything unusual about SBA addresses
>ending with the values you cite.  Of course, I'm "ass.u.ming" you follow
>the SBAs immediately with SF[E] orders....
>
>    -jc-

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