Put up Letter box signage: No name writing, letter box, drawing sign board plate neo-sign board or placard of any kind shall be put on in any window on the exterior of the Said Unit or on the outside wall of the Buildings so as to be visible from outside the Said Unit. Save at the place as be approved or provided by the Developer Provided however nothing contained herein shall prevent the Purchaser to put a decent name plate on the outface of the main door of the said flat or unit.