checkCIF procedure

PLAT001

 SHELXL2018 and later will automatically include the final '.res' file in the
 CIF as an embedded comment preceded by the dataname '_shelx_res_file'.
 That dataname should not be renamed into '_iucr_refine_instructions_details'.
 This embedded file contains the complete details of the refinement model
 used and can along with the embedded _shelx_hkl_file be extracted to repeat
 the final refinement in order to recreate the final '.fcf' file to be used
 for the validation of the refinement.