I authored those files so I could render the Seventh Edition manuals
as PDF in 1998 (long after I had departed the Labs). As pic did not
exist yet (Kernighan had not written it) there were never any
original pic files for these documents. I do not know what 1127 was
doing to publish diagrams at the time.
The Bell logo I did directly in postscript so \(bs would render. The logo
was originally it's own custom "character" just like an A, B or C, on the
phototypesetter's optical font wheel.
You can see what they look liked from the v7 PDF manuals --
In Volume 2A (
http://plan9.bell-labs.com/7thEdMan/v7vol2a.pdf)
bs.ps is on variety of pages such as 129, 130, 216
ms.pic is on page 127
make.ps is on page 282
In Volume 2B (
http://plan9.bell-labs.com/7thEdMan/v7vol2b.pdf)
implfig1.pic is on page 162
implfig2.pic is on page 168
these are the PDF page numbers (where the title is page 1)
From: Mark Longridge <cubexyz(a)gmail.com>
I came across some Unix files in v7add such as bs.ps for the Bell logo
and ms.pic (described as Figure 1 for msmacros).
http://www.maxhost.org/other/ms.pic
I was wondering if there was some viewer or conversion program so we
could look at pic files from this era?
Mark