newPage(100, 100)
stroke(0)

# vertical
line((10, 0), (10, 100))
line((20, 0), (20, 100))
line((30, 0), (30, 100))
line((40, 0), (40, 100))
line((50, 0), (50, 100))
line((60, 0), (60, 100))
line((70, 0), (70, 100))
line((80, 0), (80, 100))
line((90, 0), (90, 100))

# horizontal
line((0, 10), (100, 10))
line((0, 20), (100, 20))
line((0, 30), (100, 30))
line((0, 40), (100, 40))
line((0, 50), (100, 50))
line((0, 60), (100, 60))
line((0, 70), (100, 70))
line((0, 80), (100, 80))
line((0, 90), (100, 90))