An agreement in writing by a non-member of a body corporate, if not revoked upon that person becoming a member, becomes an agreement in writing by a member for purposes of the alternative definition of 'special resolution' in section 1 of the Sectional Titles Act 95 of 1986. A special resolution directing a body corporate to enter into an agreement 'as per' a draft agreement must be interpreted to give effect to the intention of the signatories. Where dimensions in a draft agreement are stated to be approximate or are based on provisional diagrams, they are not to be treated as exact requirements. Similarly, rights or qualifications that are necessarily implicit, depicted on annexed diagrams, or correct patent errors in the draft may be included in the final agreement without exceeding the authority granted by the special resolution.