    db_delete_subsubfield  146 include/dbcs.h int db_delete_subsubfield(int, int, int, int);
    db_delete_subsubfield  140 include/dblocal.h int db_delete_subsubfield(int, int, int, int);
    db_delete_subsubfield 5871 source/db.c       ret = db_delete_subsubfield(tid, fnum, sfnum, ssfnum);
    db_delete_subsubfield 6803 source/dbsrv.c    ret = db_delete_subsubfield(tid, fnum, sfnum, ssfnum);
    db_delete_subsubfield 2379 source/dbstress.c    ret = db_delete_subsubfield(tid, fnum, sfnum, ssfnum);