>> That seems odd. If this were pixel computer graphics then 13u may
>> be rounded up to 24u but that would be a 24 pixel-long line
>> occupying pixels 0 to 23 inclusive; clearly just a single character
>> cell.
>
> Well, groff is different :) Doing \D'l 0 0' already draws something.
> You get a `+' because it is not possible to decide whether it is a
> horizontal or vertical line.
>
> Can someone check what AT&T nroff does? Or heirloom troff? Maybe
> I've introduced some sillyness years ago and I should change groff
> back so that \D'l 0 0' draws nothing and \D'l 24u 0' a single
> character cell...
I've just tested heirloom troff, and it doesn't support \D'l ...' with
nroff. Consequently, I think AT&T nroff doesnt' do it either.
Will have to think how to proceed...
Suggestions?
Werner
