if (.not.exist(sflux)) then
  define char*32 sflux[2] /global
  let sflux 0
endif
!
if spacing[1].eq.spacing[2]  let spacing[2] 'spacing_rule%c' 
!
say "EXPLORE will plot spectra at user specified positions around a 2-D view"
say " of a data cube "
say " "
!
say " "
say "  Spectral range         "'ansi%blue'"SPAN"'ansi%none'"        [" 'bold''span[1]'  'span[2]''norm' "]         in 3rd axis unit, (0,0) ==> all"
say "  Flux Scale range       "'ansi%blue'"SFLUX"'ansi%none'"       [" 'bold''sflux[1]' 'sflux[2]''norm' "]           [*], [0] or [Min Max]  "

say "  Map channel range      "'ansi%blue'"RANGE"'ansi%none'"       [" 'bold''range[1]'  'range[2]''norm' "]         in 3rd axis unit, (0,0) ==> all"
!say "  Channel label          "'ansi%blue'"MARK"'ansi%none'"        [" 'bold''mark''norm' "]    [VELOCITY, FREQUENCY or CHANNEL]"
say "  Displayed field size   "'ansi%blue'"SIZE"'ansi%none'"        [" 'bold''size[1]' 'size[2]''norm' "]         "'box%sunit'
say "  Field center           "'ansi%blue'"CENTER"'ansi%none'"      [" 'bold''center[1]' 'center[2]''norm' "]         offset "'box%sunit'
!say "  Cross size at center   "'ansi%blue'"CROSS"'ansi%none'"       [" 'bold''cross''norm' "]           in arcsec, 0 ==> none "
say "  Colour Scale range     "'ansi%blue'"SCALE"'ansi%none'"       [" 'bold''scale[1]' 'scale[2]''norm' "]         (0,0) ==> all dynamic"
say "  Contour levels         "'ansi%blue'"SPACING"'ansi%none'"     ["  'bold''spacing[1]'" "'spacing[2]''norm'"]       [Value Unit] [0] ==> Guess"
say " "
!say "  Display the header     "'ansi%blue'"DO_HEADER"'ansi%none'"   [" 'bold''do_header''norm' "]   "
!say "  Display a color wedge  "'ansi%blue'"DO_WEDGE"'ansi%none'"    [" 'bold''do_wedge''norm' "]     "
say "  Plot bitmaps           "'ansi%blue'"DO_BIT"'ansi%none'"      [" 'bold''do_bit''norm' "]         "
!say "  Display the labels     "'ansi%blue'"DO_LABEL"'ansi%none'"    [" 'bold''do_label''norm' "]     "
say "  Display contour levels "'ansi%blue'"DO_CONTOUR"'ansi%none'"  [" 'bold''do_contour''norm' "] "    
say "  grey-scale contours    "'ansi%blue'"DO_GREY"'ansi%none'"     [" 'bold''do_grey''norm' "] "
say "  Better marks           "'ansi%blue'"DO_MASK"'ansi%none'"     [" 'bold''do_mask''norm' "]           (Hide image behind channel marks)"
