code: def markdownify_operative_config_str(string):
    
  
    # TODO(b/37527917): Total hack below. Implement more principled formatting.
    def process(line):
      """Convert a single line to markdown format."""
      if not line.startswith('#'):
        return '    ' + line
  
      line = line[2:]
      if line.startswith('===='):
        return ''
      if line.startswith('None'):
        return '    # None.'
      if line.endswith(':'):
        return '#### ' + line
      return line
  
    output_lines = []
    for line in string.splitlines():
      procd_line = process(line)
      if procd_line is not None:
        output_lines.append(procd_line)
  
    return '\n'.join(output_lines)
docs: Convert an operative config string to markdown format.