The commission will equally be always entitled to act through the power on whose territory it sits.
Article 25
The witnesses and experts are summoned on the request of the parties or by the commission of its own motion, and, in every case, through the Government of the state in whose territory they are.
The witnesses are heard in succession and separately, in the presence of the agents and counsel, and in the order fixed by the commission.
Article 26
The examination of witnesses is conducted by the president.
The members of the commission may, however, put to each witness questions which they consider likely to throw light on and complete his evidence, or get information on any point concerning the witness within the limits of what is necessary in order to get at the truth.
The agents and counsel of the parties may not interrupt the witness when he is making his statement, nor put any direct question to him, but they may ask the president to put such additional questions to the witness as they think expedient.
Article 27
The witness must give his evidence without being allowed to read any written draft. He may, however, be permitted by the president to consult notes or documents if the nature of the facts referred to necessitates their employment.
Article 28
A minute of the evidence of the witness is drawn up forthwith and read to the witness. The latter may make such alterations and additions as he thinks necessary, which will be recorded at the end of his statement.
When the whole of his statement has been read to the witness, he is asked to sign it.
Article 29
The agents are authorized, in the course of or at the close of the inquiry, to present in writing to the commission and to the other party such statements, requisitions, or summaries of the facts as they consider useful for ascertaining the truth.
Article 30
The commission considers its decisions in private and the proceedings are secret.
All questions are decided by a majority of the members of the commission.
If a member declines to vote, the fact must be recorded in the minutes.
