Figure 1: Key-letters used by refer

_______________________________________________________________________
|     Refer database file      |
|___________|__________________________________________________________|
| Key-letter|  Replacement String   |
|___________|__________________________________________________________|
| %A |  Author's name |
| %B |  Book containing article referenced |
| %C |  City (place of publication) |
| %D |  Date of publication  |
| %E |  Editor of book containing article referenced     |
| %F |  Footnote number or label (supplied by the refer command)|
| %H |  Header commentary, printed before reference      |
| %I |  Issuer (publisher)   |
| %J |  Journal containing article  |
| %K |  Keywords to use in locating reference     |
| %L |  Label field used by -k flag of the refer command |
| %N |  Number within volume |
| %O |  Other commentary, printed at end of reference    |
| %P |  Page numbers  |
| %R |  Report, paper, or thesis (unpublished)    |
| %S |  Series title  |
| %T |  Title of article or book    |
| %V |  Volume number |
|___________|__________________________________________________________|