Pieces are arranged in this section so that, if they promote, they promote into the piece above them. Piece names with a grey background are present at the start of the game; those with a blue background only appear with promotion. Betza's funny notation has been included in brackets for easier reference, with the extension that the notation "xxxayyy"K stands for an "xxx"K move possibly followed by an "yyy"K move, not necessarily in the same direction. Larger numbers of 'legs' can be indicated by repeated application of 'a', or by numbers: thus "a3K" means a piece that can take up to three steps of a king. By default continuation legs can go into all directions, but can be restricted to a single line by a modifier 'v' ("vertical", interpreted relative to the piece's current position on its path). The default modality of all legs is the ability to move and capture: other possibilities are specified explicitly. Thus "mKa3K" means a piece that takes up to three steps of a king, but must stop when it first captures. Square brackets are used to make it clear what legs the a modifier chains together: thus DaK would denote a dabbaba move followed by a king move, but D would denote a piece that can move as a dabbaba, or twice as a king.