code: def _tr_help(line_info):
      "Translate lines escaped with: ?/??"
      # A naked help line should just fire the intro help screen
      if not line_info.line[1:]:
          return "get_ipython().show_usage()"
  
      return _make_help_call(
          line_info.ifun, line_info.esc, line_info.pre
      )
  
imports: import abc
  import functools
  import re
  from IPython.core.splitinput import LineInfo
  from IPython.utils import tokenize2
  from IPython.utils.openpy import cookie_comment_re
  from IPython.utils.py3compat import with_metaclass, PY3
  from IPython.utils.tokenize2 import generate_tokens, untokenize, TokenError
label_desc: Use image node_id 5 for calling a global function with example usage: _tr_help(line_info) and returns: _make_help_call, str