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From: stevesu@copper.TEK.COM (Steve Summit)
Newsgroups: comp.os.vms
Subject: How to get multi-level command history to work?
Message-ID: <1150@copper.TEK.COM>
Date: Sat, 20-Jun-87 16:35:59 EDT
Article-I.D.: copper.1150
Posted: Sat Jun 20 16:35:59 1987
Date-Received: Tue, 23-Jun-87 07:36:25 EDT
Reply-To: stevesu@copper.UUCP (Steve Summit)
Distribution: world
Organization: Tektronix, Inc., Beaverton, OR.
Lines: 15
Keywords: terminal driver command history

Here's a new question, which I'm surprised hasn't been discussed
here already.  The version 4 terminal driver provides for recall
of the previous command line, and DCL somehow extends this to the
last 20 lines.  More recently, DEBUG and CMS (and probably
others) have also acquired the same functionality.

The obvious question is, how can I make my own interactive
applications interact with the terminal driver to provide deeper
command history?  I am sure that there are undocumented terminal
driver qio's which implement this, and I could go off and wade
through the fiche, but surely someone out there knows, and I'm
sure many people would be interested to hear how.

                                           Steve Summit
                                           stevesu@copper.tek.com