P3D Re: RBT mounts

["John Goodman" <jgood@xxxxxxxx>]

Ray wrote:
> In respect to RBT Mounts - Dr T Wrote:
> >I have also treated the line (also an arrow) as the top.  I think
> >I have heard that this might make a difference in an RBT projector...
> 
> RBT projectors uses a slide tray which is inverted in the projector.
> The thumbnail line makes it easier to remove individual slides from RBT
> slide trays.
> 
> I always mount white to front and arrow to top - except for the occasional
> inverted asymmetric Nimslo mount.

I'm still confused... :-)   Line/arrow to -top- means when 
the slide is oriented for projection (i.e., images upside 
down to naked eyes) or for viewer use (images right side 
up)? If the b & w halves are congruent, where does the 
half-moon cutout on the sides wind up: on the right when 
using a viewer?

JG