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From: gwyn@BRL-VLD.ARPA
Newsgroups: net.unix
Subject: Re:  job control in Sys V
Message-ID: <935@sri-arpa.UUCP>
Date: Sat, 16-Jun-84 21:06:09 EDT
Article-I.D.: sri-arpa.935
Posted: Sat Jun 16 21:06:09 1984
Date-Received: Wed, 20-Jun-84 00:38:26 EDT
Lines: 14

From:      Doug Gwyn (VLD/VMB) 

UNIX System V Release 2 provides a form of job control, but it differs
significantly from Berkeley's:

- Uses "sxt" pseudo-devices (like pty's but better)
- Obtained by running "shl" (shell layers) program
- Layers are transparent to applications
- No signals are involved
- Apparently applications cannot determine the "shl" activity (so that
  for example a screen editor will not be able to automatically refresh
  the display when the editor job is reactivated)

Not available on the PDP-11/70, according to the SRD.