code: def emphasize(s: str) -> str:
      # Need to escape underscores.
      s = s.replace("_", "\\_")
      return f"__{s}__"
  
imports: import argparse
  import logging
  import os
  import re
  import sys
  from collections import OrderedDict
  from dataclasses import dataclass
  from enum import Enum
  from multiprocessing import Pool, cpu_count
  from pathlib import Path
  from typing import List, Optional, Tuple
  import docspec
  from docspec import ApiObject, Class, Data, Function, Indirection, Module
  from docspec_python import format_arglist
  from pydoc_markdown import Processor, PydocMarkdown, Resolver
  from pydoc_markdown.contrib.loaders.python import PythonLoader
  from pydoc_markdown.contrib.renderers.markdown import MarkdownRenderer
label_desc: Use image node_id 1 for calling a global function with example usage: emphasize(s) and returns: str, s, str