X. EXHIBITS X. EXHIBITS APPENDIX IX  SUGGESTIONS ON HOW TO MARK OUT A COURT Including Blended Lines NOTE:  All court measurements shall be made to the outside of the lines.  The following procedure is for the usual combined doubles and singles court. (See  note at foot for a court for one purpose only.) First select the position of the net; a straight line 42 feet (12.80 m) long. Mark the  center (X on the diagram above) and, measuring from there in each direction, mark:  at 13’6” (4.11 m) the points a, b, where the net crosses the inner sidelines, at 16’6” (5.03 m) the positions of the singles sticks (n, n), at 18’0” (5.48 m) the points A, B, where the net crosses the outer sidelines, at 21’0” (6.40 m) the positions of the net posts (N, N), being the ends of the original  42’0” (12.80 m) line. Insert pegs at A and B and attach to them the respective ends of two measuring  tapes. On one, which will measure the diagonal of the half-court, take a length 53’1”  (16.18 m) and on the other (to measure the sideline) a length of 39’0” (11.89 m). Pull  288 289 both taut so that at these distances they meet at a point C, which is one corner of  the court. Reverse the measurements to find the other corner D. As a check on this  operation it is advisable at this stage to verify the length of the line CD which, being  the baseline, should be found to be 36’0” (10.97 m); and at the same time its center  J can be marked, and also the ends of the inner sidelines (c, d), 4’6” (1.37 m) from  C and D. The center line and service line are now marked by means of the points F, H, G,  which are measured 21’0” (6.40 m) from the net down the lines bc, XJ, ad, respec - tively. Identical procedure the other side of the net completes the court. If a singles court only is required, no lines are necessary outside the points a, b,  c, d, but the court can be measured out as above. Alternatively, the corners of the  baseline (c, d) can be found if preferred by pegging the two tapes at a and b in - stead of at A and B, and by then using lengths of 47’5” (14.46 m) and 39’0” (11.89  m). The net posts will be at n, n, and a 33’0” (10 m) singles net should be used. When a combined doubles and singles court with a doubles net is used for singles,  the net must be supported at the points n, n, to a height of 3 feet 6 inches (1.07  m) by means of two singles sticks, which shall be not more than 3 inches (7.5 cm)  square or 3 inches (7.5 cm) in diameter. The centers of the singles sticks shall be  3 feet (.914 m) outside the singles court on each side. To assist in the placing of these singles sticks it is desirable that the points n, n,  should each be shown with a white dot when the court is marked. When sanctioning bodies approve so called “Blended Lines” on courts the follow - ing guidelines must be followed: Colour: • Within the same colour family as the background playing surface. • Lighter than the background playing surface. • Limit on colour variation of +22 points on the L* scale (Add <25% by volume of white paint to the background colour) Pace: Dimensions: Marking: • Within 5 CPR of the playing surface. • 1.0-1.5 cm narrower than the standard lines. • Terminate 8 cm from intersection with white playing lines. Note: As a guide for international competitions, the recommended minimum distance  between the baselines and the backstops should be 21 feet (6.40 m) and between  the sidelines and the sidestops the recommended minimum distance should be 12 