The main rights
Under article 66 of the Criminal Procedure Code: to use the legal help of a lawyer and to take part with him in the investigative acts; to give evidence in the native language and to use an interpreter, if the witness does not know the language of the interrogation; to write the evidence in his own hand; to read the record and to add additions and changes to it; to appeal against the acts of the inquiry officer, the investigator, the prosecutor and the court; to get back the costs of the summons (article 75).
The duties of a witness
A witness must come when summoned, tell the truth about everything he knows and answer the questions. If he does not come without a valid reason, he can be brought in by force. The law sets liability for a refusal to give evidence and for evidence that the witness knows to be false.
Release from the duty
Nobody must give evidence against himself or his close relatives. That is the guarantee in article 28 of the Constitution.
The summons
Under article 97 of the Criminal Procedure Code, a witness is summoned by a summons paper; the summons can also come by telephone message or telegram. It states who is summoned and in what capacity, when, where and to whom, and the consequences of not coming.
Advice
Read the record with care. If it holds words that you did not say, write "this sentence does not match my words" and only then sign.