Irish dance (typically the top half of dancers graded after the first two rounds) of dancers are invited back to perform. The Céilí dances used in competitions are more precise versions of those danced in less formal settings. There is a list of 30 Céilí dances which have been standardised and published in An Coimisiún's "Ar Rinncidhe Foirne" as examples of typical Irish folk dances; these are called the "book" dances by competitive stepdancers. Most Irish dancing competitions only ask for a short piece of any given dance, in the interests of time. There are two types of shoes; soft shoes (also
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