rights or obligations before any court or other authority, including the announcement of the decision of the court or other authority, shall be held in public: Provided that the court or other authority may, to such an extent as it may consider necessary or expedient in circumstances where publicity would prejudice the interest of justice or interlocutory civil proceedings or to such extent as it may be empowered or required by law so to do in the interest of defence, public safety, public order, public morality, the welfare of persons under the age of twenty-one years or the protection of the private lives of persons concerned in the proceedings, exclude from its proceedings, persons other than the parties thereto and their legal representatives. (4) Every person who is charged with a criminal offence shall be presumed to be innocent until he is proved, or has pleaded guilty: Provided that nothing contained in or done under the authority of any law shall be held to be inconsistent with or in contravention of this subsection, to the extent that the law in question imposes on any person charged as aforesaid the burden of proving particular facts. (5) Every person who is charged with a criminal offence— a. shall be informed at the time he is charged in the language which he understands and in detail, of the nature of the offence charged; b. shall be given adequate time and facilities for the preparation of his defence; c. shall be permitted to defend himself in person or by a legal practitioner of his own choice; d. shall be afforded facilities to examine in person or by his legal practitioner the witnesses called by the prosecution before any court and to obtain the attendance and carry out the examination of witnesses to testify on his behalf before the court on the same conditions as those applying to witnesses called by the prosecution; and e. shall be permitted to have without payment the assistance of an interpreter if he cannot understand the language used at the trial of the charge: Provided that nothing contained in or done under the authority of any law shall be held to be inconsistent with or in contravention of this subsection to the extent that the law in question prohibits legal representation in a Local Court. (6) When a person is tried for any criminal offence, the accused person or any person authorised by him in that behalf shall if he so requires, and subject to the payment of such reasonable fee as may be prescribed by law, be given within a reasonable time, and in any event not more than three months after trial, a copy for the use of the accused person of any record of the proceedings made by or on behalf of the court. (7) No person shall be held to be guilty of a criminal offence on account of any act or omission which did not, at the time it took place, constitute such an offence. (8) No penalty shall be imposed for any criminal offence which is severer in degree or description than the maximum penalty which might have been imposed for that offence at the time when it was committed. (9) No person who shows that he has been tried by any competent court for a criminal offence and either convicted or acquitted shall again be tried for that offence or for any other offence of which he could have been convicted at the trial for that offence save upon the order of a superior court made in the course of appeal proceedings relating to the conviction or acquittal; and no person shall be tried for a criminal offence if he shows that he has been pardoned for that offence: Provided that nothing in any law shall be held to be inconsistent with or in contravention of this subsection by 15