              Data items in the DATABASE_PDB_REMARK category record details\
               about the data block as archived by the Protein Data Bank (PDB).\
\
               Some data appearing in PDB REMARK records can be\
               algorithmically extracted into the appropriate data items\
               in the data block.\
\
               These data items are included only for consistency with older\
               PDB format files. They should appear in a data block only if\
               that data block was created by reformatting a PDB format file.