Re: post-GDP doc team

[Trevor Daniels]

Neil, you wrote Wednesday, August 06, 2008 8:45 PM
> 2008/8/6 Trevor Daniels <address@hidden>:
> > Neil
> >
> > Further to this, I've just realised that 'layer takes a number, not an
> > integer, so the variable overprinting of grobs in the same layer could be
> > due to rounding.  In effect we have an infinite number of layers, but 
> > grobs
> > with the same nominal value may be printed in either order.
>
> I think that's a mistake, since System::get_paper_system () converts
> the value to int using robust_scm2int; this is where the default value
> of 1 is set for all the objects which don't have 'layer set in
> define-grobs.scm.
You're right.  The value of 'layer is held as a real, but converted to an
integer before use.  It seems all +ve and -ve integers are effective,
though, so we still have quite a few discrete layers.  I'll incorporate
the essentials of this in the NR.

BTW, I can't find robust_scm2int.  Does this round or truncate?

> Regards,
> Neil