>whilst the red/black color in GSAS make no strong sense to me
As far as I understand, the spin-flip model in GSAS is equivalent to
Shubnikov symmetry with "red color" meaning primed element.
There was a more detailed description of how it works on the list in the
message by Elad Caspi (quite long time ago) - you can try to find it in
the list archive...
Sincerely,
Maxim.
_______________________________________
Maxim V. Lobanov <[EMAIL PROTECTED]>
Department of Materials Science and Engineering
University of Tennessee
101 South College
1413 Circle Dr.
Knoxville, TN 37996
