Path: utzoo!attcan!uunet!husc6!rutgers!gatech!fabscal!nanovx!jwren!jcw
From: jcw@jwren.UUCP (John C. Wren)
Newsgroups: comp.sys.ibm.pc
Subject: Re: shift-print sreen from  .bat file
Message-ID: <238@jwren.UUCP>
Date: 13 Nov 88 22:34:31 GMT
References: <421@caldwr.UUCP> <394@megatek.UUCP> <772@wsccs.UUCP>
Reply-To: jcw@jwren.UUCP (John C. Wren)
Organization: Home For Wayward Computers
Lines: 9

Actually, the RET is perfectly legal.  DOS states that a .COM file is
executed via a call.  Thus, when you return, you return back into DOS
who is expecting it.  However, a more correct way is to use function
04ch in AH, via INT 21.  By loading AL (should you need to), you can 
return a result code that the batch file can check (via the ERRORLEVEL
mechanism.)  INT 20 is considered obsolete, as is jumping to 0, and
using AH=0, via INT 21.

					John Wren (jcw@jwren)