* Bumping might sometimes not work if positions are very different.
* Add inner search cutoff criteria as well (for Precession data).
* Peaks needs:
        I/O Menu
* Store/use Rfactor somehow.
* In error mode, show (Fobs-Fcalc)/sigma ?
* Currently ALWAYS analyzes unique solutions, even if user has displayed non-uniques.
* Skew output images as appropriate.
* DP scaling possibly incorrect for non-orthogonal axes.
* Mbfit, peaks documentation & help.
* Allow the user to add 'T' to the list?
        
