S4 (r) "Undertaking" means commitment to comply with or control, prevent or avoid future breaches of the provisions of the Act made by a person to the Competition Commission as may be required by the Act; and (s) "small enterprises" shall bear the same meaning as the definition set out in national legislation, public policy guidelines or statements issued by the relevant Government ministry from time to time. Office hours and address of the Commission 4. (I) The offices of the Commission are open to the public every Monday to Friday, excluding public holidays, from 08hOO to 17hOO. (2) Despite sub-paragraph (I), in exceptional circumstances the Commission may accept documents for filing on any day and at any time. (3) Any communication to the Commission, or to a member of the staff of the Commission, may be (a) delivered by hand at the Competition Commission Offices; (b) addressed by registered post to the Competition Commission; (c) transmitted by fax; and/or (d) transmitted by electronic mail. FOI11/S 5. All the Commission's ofiicial forms must be made easily accessible to members of the public in both print and electronic format. Condonation of time limits 6. On good cause shown, the Executive Director or a duly authorized representative may condone late performance of an act in respect of which these Regulations prescribe a time limit. Delegation of Executive Director's functions 7. The Executive Director may delegate, in writing, any function or power to a member of the staff of the Commission, either generally or in connection with a particular matter. Delivery of documents 8. (I) A notice· or document may be delivered in any manner contemplated in Regulation 4(3)(a)(d). (2) A party shall prove to the Commission that a document was delivered in terms of these Regulations, by providing the Commission (a) with a copy of proof of mailing the document by registered post to the other party; a document sent by registered post is presumed to have been received by the person to whom it was sent ten days after it was posted, unless the contrary is proved; . '