checkCIF procedure

PLAT768

 The supplied '.cif' file includes explicit atomic scattering factor date in  
 the embedded '.res' file. Those values may or may not be identical to the
 standard values as included in current versions of SHELXL. It should be noted
 that those values will not (by default) be present as CIF data items in CIF's
 created with SHELXL. PLATON/checkCIF will use its own build-in scattering 
 factors, that are identical to those used by default by SHELXL for common
 wavelengths, for its validation calculations.