Modern western square dance of "patter calls" and "singing calls", the two types of square dance calls. The logos shown on the right are the international square dance logo and the modern Alliance of Round, Traditional and Square-Dance logo. Modern western square dancing is a non-competitive activity. There are no dance competitions, and apart from fun events, no prizes are ever offered or sought for 'best dancer' or 'best square'. Particularly at the 'challenge' levels there is large degree of personal satisfaction to be gained from the problem solving element of completing a dance. At all levels the main elements are to enjoy the
Four square squares are out of bounds. The ball may not touch any portion of an inside line or the player who hit the ball is in error. The lines marking the outermost edges of the court are typically considered in-bounds. These boundary rules are often described as "inside out, outside in." In recreational play, and even with a judge in tournament play, it is often difficult to determine if the ball hits the line. Four square is played with a rubber playground ball, typically 8.5" diameter, and inflated to 2 psi (lb/sq in). However, other sizes and types of balls can