Re: [Groff] Obsolete Df command?

[Werner LEMBERG]

> > "\D'f n'" must be available: too much would need removing if
> > it were removed (and 'pic' would need revising). However, provided
> > mapping old troffout "Df n" to the new syntax is equivalent,
> > it may well be retained in that way.
> > 
> Df could be mapped to DFg by
> 
> Fgray = (1000 - fgray) * 65536/1000
> 
> because fgray ranges from 0 (white) to 1000 (black).
> So it's mirrored (1000-...) and then scale from 1000 to 65536.
> Ok?

This is reasonable.


    Werner