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FONT fontname <'switchchar'>


 Define the  font  to  be  'fontname'  with  the  optional  font  switch
 character 'switchchar'.  'Fontname'  is any of  the 160 different  font
 names acceptable to <PLOT79>, or alternatively, verbose descriptions of
 the 20 principal font names:

 Block-ASCII            Cartographic-Greek      Cartographic-Roman
 Complex-Cyrillic       Complex-Greek           Complex-Italic
 Complex-Roman          Complex-Script          Duplex-Roman
 Gothic-English         Gothic-German           Gothic-Italian
 Indexical-Greek        Indexical-Italic        Indexical-Roman
 Simplex-ASCII          Simplex-Greek           Simplex-Roman
 Simplex-Script         Triplex-Roman

 The default font is Complex-Roman, and the default switch character  is
 a blank, which  disables font switching.   Up to five  fonts can be  in
 effect at  one time,  with the  most-recently specified  one being  the
 current font.  By default, the characters "<" and ">" switch to  upper-
 and lower-case respectively; if they are to be used as themselves, they
 must be  doubled.   The  principal fonts  currently  available  are  as
 follows (the  parenthesized  number following  each  name is  the  grid
 size):

 UCKR1 - Cartographic Roman (9)
 UCKG1 - Cartographic Greek (9)
 UCIR1 - Indexical Roman (13)
 UCII1 - Indexical Roman Italic (13)
 UCIG1 - Indexical Greek (13)
 UCSR1 - Simplex Roman (21)
 UCSS1 - Simplex Roman Script (21)
 UCSG1 - Simplex Greek (21)
 UCCR1 - Complex Normal Roman (21)
 UCCI1 - Complex Normal Roman Italic (21)
 UCCG1 - Complex Normal Greek (21)
 UCCS1 - Complex Script (21)
 UCDR1 - Duplex Roman (21)
 UCTR1 - Triplex Roman (21)
 UCGE1 - Gothic English (21)
 UCGI1 - Gothic Italian (21)
 UCGG1 - Gothic German (21)
 UCCC1 - Complex Cyrillic (21)
 UCSA1 - Simplex ASCII (11)
 UCBA1 - Block ASCII (11)

 The five-character font codes are  constructed from a 2-character  case
 variant 'UC'  or  'LC',  a  2-character font  acronym,  and  a  1-digit
 special-character variant code  1, 2,  3, or  4.  The  LCxyn fonts  are
 primarily of use in applications where lower-case input is unavailable,
 for they convert  upper-case letters  to lower-case.   The UCxyn  fonts
 preserve input  letter case,  except  where changed  by a  case  switch
 character.