De sneeuwvlok-krommen van Koch (figuur van niveau 1)
to flock :size
	fd :size
	lt 60
	fd :size
	rt 120
	fd :size
	lt 60
	fd :size
end
to snow :size
	cs
	ht
	repeat 3[flock :size/3 rt 120]
end
 
De sneeuwvlok-krommen van Koch (volledig programma met recursie)
to flock :size :niveau
	ifelse :niveau = 0 [fd :size][flock :size/3 :niveau-1]
	lt 60
	ifelse :niveau = 0 [fd :size][flock :size/3 :niveau-1]
	rt 120
	ifelse :niveau = 0 [fd :size][flock :size/3 :niveau-1]
	lt 60
	ifelse :niveau = 0 [fd :size][flock :size/3 :niveau-1]
end
to snow :size :niveau
	cs
	ht
	ifelse :niveau > 0 [repeat 3[flock :size/3 :niveau-1 rt 120]][repeat 3[fd :size rt 120]]
end