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Re: [Groff] underlining


From: Ralph Corderoy
Subject: Re: [Groff] underlining
Date: Tue, 08 Jul 2014 11:11:03 +0100

Hi Steve,

> But as far as I can tell, PostScript fonts have some sort of built-in
> ability for underlining that other layout systems seem to be able to
> implement. Do these two lines from Utopia-Regular have anything to do
> with it?:
>       /UnderlinePosition -100 def
>       /UnderlineThickness 50 def

They are defined on page 29 of
http://partners.adobe.com/public/developer/en/font/5004.AFM_Spec.pdf
They're per writing direction, and just give the numbers for the user of
the font to draw the line themselves;  there's no built-in aspect of
this type of font that does that AFAIK.

Cheers, Ralph.



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