> If the difference is insignificant, it may as well be off-axis. I > guess if the difference is insignificant it just comes down to personal > preferences.
My point was that if you're being strictly parsimonious with your parameters then you shouldn't be varying 2 additional parameters if it produces no significant improvement in the agreement with the data. To quote two well-known crystallographers "Where freedom is given, liberties are taken". -- Ian
