1. The maximum number of profile points in an individual powder pattern is now 200,000. 2. The program OVERLP has been extensively modified. The computation of the overlap factor has been changed to be more "rational" (the earlier version may have been in error). An additional file, name.HKL, is now output which has the values, their sigmas, derived Fobs values from averaging the individual F^2 values and phases . The FWHM is modified by the overlap factors to give an "effective" FWHM taking into account of the extra information gained from the reflection displacements between multiple histograms. It also tabulates an effective "completeness" table by data collection "shell". 3. The restraints have been extensively modified to handle 2-site disorder in protein structures. Alternate atom sites must be indicated as "A" and "B" in the PDB name (the 4th character in the name). The alternate atoms must be collected together by residue in the atom list, "A"s before "B"s as is usually generated by e.g. Coot. Three or more site disorder is not addressed. 4. The coupled torsion angle restraint ("Ramachandran restraint") has been further modified. It now follows a pattern similar to that used for torsion restraints. Tables of pseudopotential terms are inserted, each with a unique name (e.g. "ALA-1") into a single histogram. The restraints are then inserted each with one of these names to indicate which pseudopotential surface is to be used for that restraint. This way all coupled restraints can be contained within a single histogram rather than having ~30 individual histograms one for each type. There is now just a single Macro file, "2-torsion.mac", that is needed to generate these restraints. Users with old protein structure EXP files who want to continue using them will need to use a "hand editor" (e.g. PFE) to remove the old histograms and modify the HTYPE & NHST records. Then in EXPEDT insert the new "R" restraint type histogram using 2-torsion.mac. 5. The CNS output file from reflist has been changed. Apparently CNS wants Fobs & phase (0-360 deg) not Fa & Fb.