text: #!/usr/bin/env python
  
  from pandocfilters import toJSONFilter, Emph, Para, Strong, Str
  
  # pandoc -s -t native test.md
  # pandoc test.md --filter ./header-list.py  -s  -t markdown
  
  def behead(key, value, format, meta):
    if key == 'Header' and value[0] == 1:
      # return Para([Strong(value[2])])
      return Para([Strong(value[2])])
    elif key == 'Str':
      return Str(value.upper())
  
  
  if __name__ == "__main__":
    toJSONFilter(behead)
  