I	DIRECTIONS
K	\e[
A	palette
R	SPRITES
U	RESET
G	BOLD

p	px                      11
q	py                      12

h	height                  17
w	width                   13
r	running                 4
c	color                   5
a	direction               3
v	growth_target           3
b	grid                    18
d	history                 10
e	last_item_color         6
s	score                   6
o	chain_item_count        9
n	chain_length            9
m	max_chain_length        5
tf	frame_parity            3
j	input_write_index       4
k	input_read_index        4
g	position_index          4
f	new_item                6
qp	endgame                 3
td	movement_delay          2
l	input_buffer            5
z	positions               5
t	item_serial_number      4

t0	last_movement           4
t1	current_time            3
u	dirty_pixels            7
i	pass
pq	item_has_been_placed    3

ef	eligible_for_placement  3
rf	render                  7
ti	input_thread            2

i	speed
x	score_status
y	chain_status
xy	prefix
p	row
q	cell

x	next_action
y	next_cell

ik	key
id	new_direction

x	erase_x
y	erase_y
a	max_area
i	max_items
g	grade