Chekcell: “integration” of  Ton Spek and A. Meetsma’s Le Page(Crysfire 2001 now also provides a reduced-cell summary)
 
 
Obtaining the Reduced Cell 
- which in the past many powder indexing programs have not determined either reliably or at all
 - Refer: "'Reduced Cells', M.J. Buerger, (Zeitschift fur Kristallographie, BD 109, S. 42-60 (1957)”
 - Crysfire 2001 gives a LePage overview Chekcell displays a fuller analysis
 
Efficient Sub-cell and super-cell searching, then easy reviewing of newly derived cells within the Chekcell interface