GSAS: Getting > 1600 bond restraints in a GSAS happy format Use a column able editor such as ConTEXT to change to desired bond lengths and ESDs
E.g.,
- Ca - O bond length = 2.3
- ESD = 0.11
- O-O bond length = 2.90
- ESD = 0.31
- (use histogram weighting on the bond restraints to tighten or loose their influence on the refinement)
[CNTRL L] in ConTEXT to go in and out of column editing mode
http://www.fixedsys.com/context/