; FUNCTYPE
;---------------------------------------------------------------
;! specifies type of intensity transfer function
;# ADVERB PLOT
;-----------------------------------------------------------------------
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;-----------------------------------------------------------------------
;---------------------------------------------------------------
FUNCTYPE  LLLLLLLLLLLLUUUUUUUUUUUU CCCCCCCCCCCCCCCCCCCCCCCCCCCCC
----------------------------------------------------------------
FUNCTYPE
Type: Adverb (String, 2 characters)
Use:  The function type associated with a task or a verb.  The function
      is designated by two characters.
      For image loading transfer functions the usual values are
         'LN' for linear,
         'LG' for logarithmic,
         'SQ' for square root,
         'NE' for negative linear,
         'NG' for negative logarithmic,
         'NQ' for neagtive square root.
      Unrecognized codes are taken as 'LN'.
Null value: '  '
      Null value assignment varies with task or verb.
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