From mboxrd@z Thu Jan  1 00:00:00 1970
To: 9fans@cse.psu.edu
Subject: Re: Re[2]: [9fans] Re: Perl5 & kenji arisawa's perl question
From: forsyth@vitanuova.com
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Date: Tue,  7 Nov 2000 17:04:04 +0000
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>>well section 6 tells you it's a game.  it was a tso
>>[time sharing option?] 'simulation'.  i think i saw
>>it in 8th ed, but i'm not sure.

it was a version of the unix shell (5th/6th edition) with prompts, diagnostics and other text
modified to reflect the IEH2374I INVALID DATA SET NAME style of TSO;
it also stty'd lcase so input and output was of course UPPER CASE.
i remember it had judiciously placed sleeps the better to mimic the full TSO feel.