code: def _underline(self, string):
      return "\\fI\\s-1" + string + "\\s0\\fR"
  
imports: import argparse
  import datetime
  import os
  import re
  import time
  from textwrap import wrap
label_desc: Use image node_id 4 for calling the ManPageFormatter obj's underlying member method code with example usage: obj._underline(string) and returns: unknown