As per Art. 250 of the Criminal Code - The crime of falsification of public or prive documents is committed by any of the following means: Altering the content of a true document after it has been completed and signed. And from Art. 254 of the same legal system: The crime of falsehood in the statements given before an authority, who, when questioned by an authority in the exercise of his funcions or on the occasion of them, fails to tell the truth.