[phenixbb] phaser_x.mtz, resolve_x.mtz and exptl_fobs_phases_freeR_flags.mtz give different Rfree's using same model?

[Ralf W. Grosse-Kunstleve]

> What is the refinement target ml_sad?

This instructs phenix.refine to use a target function from phaser.
This option is still under development. You're better served with
the ml target.

(I hope Tom will help with the other questions.)

Ralf