854 CAPTIONS AND PATTERN--SUPPLEMENTARY MATERIAL (R)
Indicators
First Compressability and expandability
0 Cannot compress or expand
1 Can compress but not expand
2 Can compress or expand
3 Unknown
Second Caption evaluation
0 Captions verified; all levels present
1 Captions verified; all levels may not be present
2 Captions unverified; all levels present
3 Captions unverified; all levels may not be
present
Subfield Codes
$a First level of enumeration (NR)
$b Second level of enumeration (NR)
$c Third level of enumeration (NR)
$d Fourth level of enumeration (NR)
$e Fifth level of enumeration (NR)
$f Sixth level of enumeration (NR)
$g Alternative numbering scheme, first level of
enumeration (NR)
$h Alternative numbering scheme, second level of
enumeration (NR)
$i First level of chronology (NR)
$j Second level of chronology (NR)
$k Third level of chronology (NR)
$l Fourth level of chronology (NR)
$m Alternative numbering scheme, chronology (NR)
$o Type of supplementary material (NR)
$t Copy (NR)
$u Bibliographic units per next higher level (R)
$v Numbering continuity (R)
$w Frequency (NR)
$x Calendar change (NR)
$y Regularity pattern (NR)
$3 Materials specified (NR)
$8 Link and sequence number (NR)