# set terminal pngcairo  transparent enhanced font "arial,10" fontscale 1.0 size 600, 400 
# set output 'stringvar.1.png'
unset border
set label 1 "" at graph 0.1, 0.95, 0 left norotate back nopoint
set label 2 "Exercise substring handling" at graph 0.1, 0.9, 0 left norotate back nopoint
set label 3 "" at graph 0.1, 0.85, 0 left norotate back nopoint
set label 4 "beg = 2 end = 4" at graph 0.1, 0.8, 0 left norotate back nopoint
set label 5 "foo           = ABCDEF" at graph 0.1, 0.75, 0 left norotate back nopoint
set label 6 "foo[3:5]      = CDE" at graph 0.1, 0.7, 0 left norotate back nopoint
set label 7 "foo[1:1]      = A" at graph 0.1, 0.65, 0 left norotate back nopoint
set label 8 "foo[5:3]      = " at graph 0.1, 0.6, 0 left norotate back nopoint
set label 9 "foo[beg:end]  = BCD" at graph 0.1, 0.55, 0 left norotate back nopoint
set label 10 "foo[end:beg]  = " at graph 0.1, 0.5, 0 left norotate back nopoint
set label 11 "foo[5:]       = EF" at graph 0.1, 0.45, 0 left norotate back nopoint
set label 12 "foo[5:*]      = EF" at graph 0.1, 0.4, 0 left norotate back nopoint
set label 13 "foo[:]        = ABCDEF" at graph 0.1, 0.35, 0 left norotate back nopoint
set label 14 "foo[*:*]      = ABCDEF" at graph 0.1, 0.3, 0 left norotate back nopoint
set label 15 "foo.foo[2:2]  = ABCDEFB" at graph 0.1, 0.25, 0 left norotate back nopoint
set label 16 "(foo.foo)[2:2]= B" at graph 0.1, 0.2, 0 left norotate back nopoint
set label 17 "" at graph 0.1, 0.15, 0 left norotate back nopoint
set label 18 "foo[1:1] eq 'A' && foo[2:2] ne 'X' = true" at graph 0.1, 0.1, 0 left norotate back nopoint
set style increment default
set style data lines
unset xtics
unset ytics
set xrange [ * : * ] noreverse writeback
set x2range [ * : * ] noreverse writeback
set yrange [ 0.00000 : 1.00000 ] noreverse nowriteback
set y2range [ * : * ] noreverse writeback
set zrange [ * : * ] noreverse writeback
set cbrange [ * : * ] noreverse writeback
set rrange [ * : * ] noreverse writeback
iswindows = 0
beg = 2
end = 4
foo = "ABCDEF"
plot 0 lc bgnd notitle