Re: [Groff] Obsolete Df command?

[Bernd Warken]

On Tue, Oct 30, 2001 at 08:04:48PM -0000, Ted Harding wrote:
> 
> "\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?

Bernd