4. Forms The forms referred to herein those prescribed in the Second Schedule of these Regulations and forms shall be used in all cases to which they are applicable and may be modified as directed by the Registrar to meet other cases. 5. Re-classification of goods or services Trade and service marks which have been registered before the commencement of this Act, under existing classifications shall be re-classified, upon applications for renewals under sections 29 and 63 of the Act into the International Classification system. 6. Size, etc., of documents Subject to any other directions that may be given by the Registrar, all applications, notices, counterstatements, papers having representations affixed, or other documents authorized or required by the Act or these Regulations to be made, left or sent, at or to the office, shall unless the Registrar otherwise directs, be written, type written, lithographed or printed in English or Kiswahili language upon document paper, in dark indelible ink, on one side only on foolscap paper of a size approximately 13 inches by 8 inches, and shall have on the left-hand part thereof a margin of not less than 1½ inches. 7. Signature of documents by partnerships, companies etc. (1) A document purporting to be signed for or on behalf of partnership shall contain the names of all the partners in full and shall be signed by all the partners or by any qualified partner stating that he signs on behalf of the partnership, or by any other person who satisfies the Registrar that he is authorized to sign the document. (2) A document purporting to be signed for or on behalf of a body corporate shall be signed by a director or by the secretary or other principal officer of the body corporate, or by any other person who satisfies the Registrar that he is authorized to sign the document. (3) A document purporting to be signed for or on behalf of an association of persons may be signed by any person who appears to the Registrar to be duly qualified. (4) All documents stated in subregulations (2) and (3) shall be sealed. 8. Service of Documents All applications, notices, statements, papers having representation affixed or other documents authorized or required by the Act or these Regulation to be made, left, sent, or delivered at or to the office, or with or to the Registrar or the Court or any other person may be sent through the post by a prepaid or official paid letter, any application or any document so sent shall be deemed to have been made, left, sent, or delivered at the time when the letter containing the same would be delivered in the ordinary course of post. In proving such delivery or sending, it shall be sufficient to prove that the letter was properly addressed and put into the post. 9. Address Where any person is by the Act or these Regulations, bound to furnish the Registrar with an address, the address given shall in all cases be as full as possible, for the purpose of enabling any person easily to find the place of the person whose address is given, and shall include a postal address. 10. Address of service (1) The Registrar may require an applicant, opponent, or a registered proprietor or registered user of a trade or service mark, who does not reside or carry on business within Tanzania to give an address for service within Tanzania and such address may be treated as the actual address of that person for all purposes connected with the matter in question. (2) Any registered proprietor or registered user of a trade or service mark, or any