From mboxrd@z Thu Jan 1 00:00:00 1970 From: ron@ronnatalie.com (Ron Natalie) Date: Mon, 14 May 2018 19:42:24 -0400 Subject: [TUHS] Who used *ROFF? In-Reply-To: References: <201805141219.w4ECJo5G030533@coolidge.cs.Dartmouth.EDU> Message-ID: <01c701d3ebdd$36b88b00$a429a100$@ronnatalie.com> CAT = Computer Assisted Typesetter. It was built by a company called Graphic Systems (GSI). It was the original device troff was done for. Many of the original troff limitations go to the fact it was driving this device: there are only four fonts. These are held on film strips on a drum. Not the most sophisticated font system, but ahead of its time. It had only been on the market for two years when the labs got it and wrote troff. I believe the one we had access to (and used for the previously mentioned versatec emulation) was at the Naval Research Laboratory.