//composition using the elements: 
// color, size- depth/length, orientation and movement
// contrasting depth and color (in the horizontal plane)
// color and movement (in the vertical plane)
// contrasting character of horizontal to vertical plane

paper 0
repeat x 10 90
{
pen 20
line x 70 x 80
}
repeat x 10 80
{
pen 40
line x 52 x 60
}
repeat x 10 70
{
pen 60
line x 36 x 42
}
repeat x 10 60
{

pen 80
line x 22 x 26
}
repeat x 10 50
{
pen 100
line x 10 x 12
}
repeat y 5 95
{
pen (100-y)
line 15 y 30 y
}
repeat y 5 95
{
pen (100-y)
line 35 y 37 y
}