code: def create_big_url(name):
      
      # BIG side effect
      global BIG_URLS
      filemeta = get_url_filemeta(name)
      if not filemeta:
          return None
      filename = filemeta['filename']
      remote_size = filemeta['remote_size']
      url = filemeta['url']
      name = filename.split('.')
      name = (name[0] if name[0] not in ('', '.') else name[1]).replace(' ', '-')
      name = name.lower().strip()
      BIG_URLS[name] = (url, int(remote_size or -1), filename)
      return name
docs: If name looks like a url, with an http, add an entry for it in BIG_URLS