------------------------------------------------------------------------ 23.1 Advertisements shall be displayed only on the floor or equipment or fittings which are normally present inside the playing area and there shall be no special additional displays. 23.2 Fluorescent or luminescent colors shall not be used anywhere within the playing area, and white shall not be used on the inside of surrounds. 23.3 Advertisements on the inside of surrounds shall be only on the longer sides of the playing area and any lettering shall not be white, of more than 2 colors, nor more than 40 cm. in height. 23.4 Advertisements on tables shall be placed only on the ends and sides of the table top and not on the legs or supporting structure, and each will be contained within a total area on any face of 200 sq. cm. Permanent advertisements are limited to the maker's normal trademark, symbol or name, once on each half of a side, but the organizing authority of a competition may grant permission for other temporary advertisements, one on each side and one on each end. 23.5 Advertisements on umpires' tables or other furniture inside the playing area shall be contained within a total area on any face of 750 sq. cm. 23.6 Advertisements on player's clothing, other than on player's numbers, shall not be white and shall be limited to: 23.6.1 Advertisements on the player's numbers, which shall be contained within a total area of 100 sq. cm. 23.6.2 Not more than three advertisements, each contained within a total area of 40 sq. cm. or one advertisement having an area of not more than 120 cm. on the front or side of a shirt. 23.6.3 One advertisement, contained within a total area of 40 sq. cm., on shorts or skirt. 23.6.4 One advertisement, contained within a total area of 200 sq. cm., on the back of a shirt. 23.7 There shall be no advertisements in the playing area or on clothing for tobacco goods, alcoholic beverages, or harmful drugs. 23.8 Advertisements on umpires' clothing shall be contained within an area of 40 sq cm. 23.9 There may be one advertisement on the floor in each half of the playing area, contained within an area of 32m, of slightly lighter or darker of the same color as the floor.