Paper 0
Pen 100

Repeat A 25 75
{
Pen A
Line 50 50 100 A}

Repeat A 75 25
{
Pen A
Line 50 50 A 100}

Repeat A 75 25
{
Pen A
Line 0 A 50 50}

Repeat A 25 75
{
Pen A
Line A 0 50 50}

Repeat A 0 50
{
Pen A
Line 0 100 A 0}

//Repeat A 0 50
{
Pen A
Line 0 0 100 A}

Repeat A 100 50
{
Pen A
Line 100 0 A 100}

//Repeat A 100 50
{
Pen A
Line 100 100 0 A}

Repeat A 100 0
{
Pen A
Line 0 A A 100}

Repeat A 0 100
{
Pen A
Line A 0 100 A}