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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def to_char(token):
 """Transforms the ASCII control character symbols to their real char. Note: If the token is not an ASCII control character symbol, just return the token. Keyword arguments: token -- the token to transform """

    if ord(token) in _range(9216, 9229 + 1):
        token = _unichr(ord(token) - 9216)

    return token