There part of heirloom troff distribution and are likely to just work on a modern Unix 

https://n-t-roff.github.io/heirloom/doctools.html

Sent from a handheld expect more typos than usual

On Fri, Oct 4, 2024 at 5:52 PM Jacobson, Doug W [E CPE] via TUHS <tuhs@tuhs.org> wrote:

Cool now I need to get grap running :)

Doug


-----Original Message-----
From: Lyndon Nerenberg (VE7TFX/VE6BBM) <lyndon@orthanc.ca>
Sent: Friday, October 4, 2024 4:51 PM
To: Jacobson, Doug W [E CPE] <dougj@iastate.edu>; tuhs@tuhs.org
Subject: Re: [TUHS] Old troff files (1988-2007)

Doug, .G1/.G2 are bookmarks for the grap pre-processor.

--lyndon