# NOT RUN {
# Make sure to use a relative timeseries generated with \code{\link{convert_relative_initial}}.
df <- convert_relative_initial(preprocess$structn_age)
# Create the plot with \code{\link{plot_line}}.
plot <- plot_line(df, col = "agecl")
# Add lower and upper range.
plot_add_box(plot)
# You can set the upper and lower range as you like!
plot_add_box(plot, range = c(0.8, 0.4))
# }
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