In <[EMAIL PROTECTED]>, on 02/08/2008
   at 04:25 PM, "Patrick O'Keefe" <[EMAIL PROTECTED]> said:

>ATTN performs an interrupt to a half-duplex SNA data flow.  It sends a
>SIGNAL RU back to the application event though the application is
>sending.   This is (if not always) interpretted by TSO as a PA1.

Close: TSO interprets both PA1 and ATTN as attention requests, as long as
you don't override the default behavior.
 
-- 
     Shmuel (Seymour J.) Metz, SysProg and JOAT
     ISO position; see <http://patriot.net/~shmuel/resume/brief.html> 
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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