SEP:main @list @shape @sample list values = [EMPTY, EMPTY, EMPTY] values[0] = 10 values[2] = 30 list_insert(values, 1, 2) list_remove(values, back, 1) print values list> matrix = [[1, 2, 3], [4, 5, 6], [7, 8, 9]] matrix[1][1] = EMPTY list_remove_horizontal(matrix, 0, back, 1) list_remove_vertical(matrix, 0, front, 1) print matrix END_SEP:main