[phenixbb] WAS: changing TLS groups mid refinement

[Ralf W. Grosse-Kunstleve]

> I suspect that French&Wilson statistics is actually applied by phenix
> internally if the supplied mtz-file only has intensities.

phenix.refine does not use the French&Wilson algorithm internally.
I started looking into it a couple times but went on to work on other
things when the extent of the data manipulations made me feel uneasy.
(Giving the users the option would be nice, though.)

Ralf