30 Jul
                
                    2010
                
            
            
                30 Jul
                
                '10
                
            
            
            
        
    
                6:30 p.m.
            
        Hi Wolfram, You can run iotbx.lattice_symmetry --unit_cell=12,12,12.1,89,90,92 P to find out the highest symmetry compatible with your unit cell. This is what's used internally as the space group when generating the R-free flags. Ralf