# default coordinates of a vertical line
vline()
# draw a vertical line with different lty
draw(vline(lty = 2))
# default coordinates of an horizontal line
hline()
# draw a vertical line with different lty
draw(hline(lty = 2))
# default coordinates of the main diagonal line
diagline()
# draw the main diagonal line with different lty
draw(diagline(lty = 2))
# default coordinates of the inverse diagonal line
diagline_inv()
# draw the inverse diagonal line with different lty
draw(diagline_inv(lty = 2))
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