# NOT RUN {
Tfr_internal_label()
Tfr_internal_label(3)
Tfr_internal_label(format = "R.expression")
Tfr_internal_label(format = "LaTeX")
Tfr_internal_label(3, format = "LaTeX")
Tfr_total_label()
Tfr_total_label(-2)
Tfr_total_label(-3)
Tfr_total_label(format = "R.expression")
Tfr_total_label(format = "LaTeX")
Tfr_total_label(-2, format = "LaTeX")
Tfr_total_label(-3, format = "LaTeX")
# }
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