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Back-porting DCL Procedures?

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The Question is:

 
In OpenVMS 7.3-2, or thereabouts, a new method of deciding whether to do a SET
 TERMINAL/INQUIRE was introduced into the SYLOGIN.COM template:
 
$ TT_NOINQUIR = "|TW|RT|WT|TK|WS|PY|FT|TN|"
$ etc...
 
This looks a better method than what went before.  Can I back-fit this, as is,
 to earlier versions of VMS, or does it require VMS 7.3-2 installed?

The Answer is :

 
  You are quite free to modify the site-specific SYLOGIN.COM file
  to meet local requirements, of course.
 
  The DCL command sequence will work as far back as the associated
  lexical functions and related structures are available within
  OpenVMS, and none of the DCL lexicals utilized are new to nor
  specific to OpenVMS Alpha V7.3-2.  All have long-standing
  availability.
 
  You can simply try the DCL sequence on the particular target
  OpenVMS version, in other words, and can then determine if it
  works for you within your SYLOGIN.COM environment.
 

  
     
     answer written or last revised on ( 6-AUG-2004 )
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