# NOT RUN {
if(interactive()){
p <- l_plot()
l1 <- l_layer_rectangle(p, x = 0:1, y = 0:1, color='red')
l_layer_delete(l1)
l2 <- l_layer_rectangle(p, x = 0:1, y = 0:1, color='yellow')
l_layer_delete(p,l2)
}
# }
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