repeat 1
side-track
set-hue 140
set-lightness -25
fill-canvas
end-repeat
set-hue 10
set-saturation 10
set-thickness 50
backward 300
repeat 20
side-track
move-left 70
smaller 50
pen-up
move-left (random 0..100)
forward (random 0..100)
arc-left radius=(random 220..500) angle=(linear 0..360 p=(random 0..100) f=40)
turn-left (random 0..360)
pen-down
set-lightness -20
arc-right radius=200 length=60
arc-right radius=60 length=40
arc-right radius=20 length=52
arc-right radius=200 length=80
arc-right radius=10 length=24
turn-left 20
set-lightness -2
arc-right radius=200 length=60
arc-right radius=60 length=40
arc-right radius=20 length=52
arc-right radius=200 length=80
arc-right radius=10 length=24
end-repeat
repeat 1
side-track
set-thickness 10
set-hue 200
set-lightness 5
set-saturation 100
pen-up
move-left 40
backward 30
arc-left radius=(random 50..150) angle=(linear 0..360 f=60 p=(random 0..100))
pen-down
circle 5
end-repeat
repeat 1
side-track
pen-up
forward (wave -20..20 f=80)
forward 100
turn-right 90
backward 30
pen-down
set-hue 0
set-saturation 100
forward 200
pen-up
move-left 50
turn-left 180
set-hue 60
set-lightness 5
pen-down
forward 200
pen-up
move-right 90
turn-right 180
set-thickness 140
pen-down
forward 140
pen-up
set-thickness 100
turn-right 180
set-hue 200
set-saturation 20
set-lightness -20
pen-down
forward 100
pen-up
turn-right 207
forward 140
set-lightness -30
set-thickness 30
turn-left (wave 90..110)
pen-down
forward 200
turn-right (wave 110..130 p=25)
forward 200
set-thickness 60
forward 70
end-repeat
repeat 1
side-track
pen-up
forward 60
forward (wave -5..10 f=80 p=25)
pen-down
set-thickness 60
set-lightness -30
circle 30
set-thickness 20
set-lightness 0
circle 10
pen-up
move-right 140
pen-down
set-thickness 60
set-lightness -30
circle 30
set-thickness 20
set-lightness 0
circle 10
end-repeat
repeat 1
side-track
set-saturation 90
set-thickness 100
set-hue 200
set-lightness -5
backward 30
turn-right 90
backward 2000
pen-down
forward 4000
pen-up
turn-right 180
move-left 100
set-hue 140
set-lightness -20
pen-down
forward 4000
turn-left 90
forward 100
turn-left 90
forward 4000
end-repeat