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Path: utzoo!linus!philabs!cmcl2!seismo!rlgvax!guy
From: guy@rlgvax.UUCP (Guy Harris)
Newsgroups: net.text
Subject: Re: nroff questions on italics/underscore
Message-ID: <246@rlgvax.UUCP>
Date: Tue, 20-Nov-84 22:53:31 EST
Article-I.D.: rlgvax.246
Posted: Tue Nov 20 22:53:31 1984
Date-Received: Thu, 22-Nov-84 07:19:30 EST
References: <941@cca.UUCP>
Organization: CCI Office Systems Group, Reston, VA
Lines: 12

> I thought that nroff checked to see if bold and underscore
> mode-starting-strings (t.bdon, t.iton) existed before attempting
> backspace/overprint kludgery to simulate bold and italic.

Versions of "nroff" prior to System III only supported the "bdon" and
"bdoff" sequences, and didn't do overprinting for emboldening.  The
System III and later versions are nicely orthogonal in this matter,
supporting magic sequences for both and supporting overprinting for
both.

	Guy Harris
	{seismo,ihnp4,allegra}!rlgvax!guy