checkCIF procedure

PLAT823

 The CIf-embedded SHELXL ABIN instruction contains a pointer to an FVAR
 parameter with a non-standard (i.e. .NE. 0 or 1) scaling factor for the
 (solvent) contribution to the structure factors supplied in the .fab file
 (e.g. created with PLATON/SQUEEZE or OLEX2/Mask). Generally, the contribution
 to the structure factors is expected to be on an absolute scale in electrons
 per unit-cell. See SHELXL manual.